diff --git a/sdk/python/kfp_tekton/compiler/_data_passing_rewriter.py b/sdk/python/kfp_tekton/compiler/_data_passing_rewriter.py
index 540369dea2a..8182fccebfc 100644
--- a/sdk/python/kfp_tekton/compiler/_data_passing_rewriter.py
+++ b/sdk/python/kfp_tekton/compiler/_data_passing_rewriter.py
@@ -339,7 +339,7 @@ def mark_upstream_ios_of_output(template_output, marked_inputs,
         renamed_results_in_pipeline_task = set()
         for task_result in spec['results']:
             task_result_old_name = task_result.get('name')
-            task_result_new_name = sanitize_k8s_name(task_result_old_name)
+            task_result_new_name = sanitize_k8s_name(task_result_old_name, allow_capital=True)
             if task_result_new_name != task_result_old_name:
                 task_result['name'] = task_result_new_name
                 renamed_results_in_pipeline_task.add(
@@ -378,7 +378,7 @@ def mark_upstream_ios_of_output(template_output, marked_inputs,
                 argument['value'] = '$(tasks.%s.%s.%s)' % (
                     argument_placeholder_parts[1],
                     argument_placeholder_parts[2],
-                    sanitize_k8s_name(argument_placeholder_parts[3]))
+                    sanitize_k8s_name(argument_placeholder_parts[3], allow_capital=True))
 
     workflow = jsonify_annotations(workflow)
     # Need to confirm:
@@ -456,7 +456,7 @@ def big_data_passing_pipeline(name: str, template: dict, inputs_tasks: set(),
         if artifact_output_list:
             tmp_list = set()
             for output in json.loads(artifact_output_list):
-                tmp_list.add(sanitize_k8s_name(output))
+                tmp_list.add(sanitize_k8s_name(output, allow_capital=True))
             for task_output in task.get('taskSpec', {}).get('results', []):
                 if task_output.get('name') in tmp_list:
                     if not task.setdefault('workspaces', []):
@@ -515,7 +515,7 @@ def big_data_passing_tasks(prname: str, task: dict, pipelinerun_template: dict,
         temp_list = json.loads(artifact_output_list)
         artifact_output_list = []
         for output in temp_list:
-            artifact_output_list.append(sanitize_k8s_name(output))
+            artifact_output_list.append(sanitize_k8s_name(output, allow_capital=True))
     for task_output in task.get('taskSpec', {}).get('results', []):
         if (task_name, task_output.get('name')) in outputs_tasks or \
             (artifact_output_list and task_output.get('name') in artifact_output_list):
@@ -525,7 +525,7 @@ def big_data_passing_tasks(prname: str, task: dict, pipelinerun_template: dict,
             # $(results.task_output.get('name').path)  -->
             # $(workspaces.task_name.path)/task_name-task_output.get('name')
             placeholder = '$(results.%s.path)' % (sanitize_k8s_name(
-                task_output.get('name')))
+                task_output.get('name'), allow_capital=True))
             workspaces_parameter = '$(workspaces.%s.path)/%s/%s/%s' % (
                 task_name, BIG_DATA_MIDPATH, "$(context.taskRun.name)", task_output.get('name'))
             if env.get('OUTPUT_BIG_DATA_PATH', 'false').lower() == 'true':
@@ -622,7 +622,7 @@ def append_taskrun_params(task_name_append: str, task_path_name: str):
             if task_param_task_name:
                 workspaces_parameter = '$(workspaces.%s.path)/%s/$(params.%s-trname)/%s' % (
                     task_name, BIG_DATA_MIDPATH, task_param_task_name, task_param_param_name)
-                task_path = sanitize_k8s_name(task_param_param_name) + OUTPUT_RESULT_PATH_SUFFIX
+                task_path = sanitize_k8s_name(task_param_param_name, allow_capital=True) + OUTPUT_RESULT_PATH_SUFFIX
                 if env.get('OUTPUT_BIG_DATA_PATH', 'false').lower() == 'true':
                     workspaces_parameter = '$(workspaces.%s.path)/$(params.%s)' % (task_name, '-'.join([task_param_task_name, task_path]))
                 if task_param_task_name != task_name:
@@ -664,7 +664,7 @@ def append_taskrun_params(task_name_append: str, task_path_name: str):
                     for index, artifact_tuple in enumerate(artifact_i):
                         artifact_name, artifact = artifact_tuple
                         src = artifact
-                        dst = '$(results.%s.path)' % sanitize_k8s_name(result['name'])
+                        dst = '$(results.%s.path)' % sanitize_k8s_name(result['name'], allow_capital=True)
                         if artifact_name == result['name'] and src != dst:
                             add_copy_results_artifacts_step = True
                             total_size_command = 'ARTIFACT_SIZE=`wc -c %s${SUFFIX} | awk \'{print $1}\'`\n' % src + \
diff --git a/sdk/python/kfp_tekton/compiler/_k8s_helper.py b/sdk/python/kfp_tekton/compiler/_k8s_helper.py
index 1366d92d905..1aa1941cd14 100644
--- a/sdk/python/kfp_tekton/compiler/_k8s_helper.py
+++ b/sdk/python/kfp_tekton/compiler/_k8s_helper.py
@@ -23,7 +23,8 @@ def sanitize_k8s_name(name,
                       allow_slash=False,
                       max_length=57,
                       suffix_space=0,
-                      rev_truncate=False):
+                      rev_truncate=False,
+                      allow_capital=False):
     """From _make_kubernetes_name
       sanitize_k8s_name cleans and converts the names in the workflow.
 
@@ -46,7 +47,9 @@ def sanitize_k8s_name(name,
     k8s_name = re.sub('[^-_./0-9A-Za-z]+', '-', name)
 
     if not allow_capital_underscore:
-      k8s_name = re.sub('_', '-', k8s_name.lower())
+      k8s_name = re.sub('_', '-', k8s_name)
+      if not allow_capital:
+        k8s_name = k8s_name.lower()
 
     if not allow_dot:
       k8s_name = re.sub('[.]', '-', k8s_name)
diff --git a/sdk/python/kfp_tekton/compiler/_op_to_template.py b/sdk/python/kfp_tekton/compiler/_op_to_template.py
index 6474b0a3b2f..305fbfafef6 100644
--- a/sdk/python/kfp_tekton/compiler/_op_to_template.py
+++ b/sdk/python/kfp_tekton/compiler/_op_to_template.py
@@ -71,11 +71,11 @@ def _get_copy_result_step_template(step_number: int, result_maps: list):
     """
     args = [""]
     for key in result_maps[step_number].keys():
-        sanitize_key = sanitize_k8s_name(key)
+        sanitize_key = sanitize_k8s_name(key, allow_capital=True)
         args[0] += "mv %s%s $(results.%s.path);\n" % (TEKTON_HOME_RESULT_PATH, sanitize_key, sanitize_key)
     if step_number > 0:
         for key in result_maps[step_number - 1].keys():
-            sanitize_key = sanitize_k8s_name(key)
+            sanitize_key = sanitize_k8s_name(key, allow_capital=True)
             args[0] += "mv $(results.%s.path) %s%s;\n" % (sanitize_key, TEKTON_HOME_RESULT_PATH, sanitize_key)
     return {
         "name": "copy-results-%s" % str(step_number),
@@ -288,7 +288,7 @@ def _process_parameters(processed_op: BaseOp,
                     commands = []
                     for c in s['command']:
                         if path in c:
-                            c = c.replace(path, '$(results.%s.path)' % sanitize_k8s_name(name))
+                            c = c.replace(path, '$(results.%s.path)' % sanitize_k8s_name(name, allow_capital=True))
                             need_copy_step = False
                         commands.append(c)
                     s['command'] = commands
@@ -296,15 +296,15 @@ def _process_parameters(processed_op: BaseOp,
                     args = []
                     for a in s['args']:
                         if path in a:
-                            a = a.replace(path, '$(results.%s.path)' % sanitize_k8s_name(name))
+                            a = a.replace(path, '$(results.%s.path)' % sanitize_k8s_name(name, allow_capital=True))
                             need_copy_step = False
                         args.append(a)
                     s['args'] = args
-                if path == '/tekton/results/' + sanitize_k8s_name(name):
+                if path == '/tekton/results/' + sanitize_k8s_name(name, allow_capital=True):
                     need_copy_step = False
             # If file output path cannot be found/replaced, use emptyDir to copy it to the tekton/results path
             if need_copy_step:
-                script = script + 'cp ' + path + ' $(results.%s.path);\n' % sanitize_k8s_name(name)
+                script = script + 'cp ' + path + ' $(results.%s.path);\n' % sanitize_k8s_name(name, allow_capital=True)
                 mount_path = path.rsplit("/", 1)[0]
                 if mount_path not in mounted_param_paths:
                     _add_mount_path(name, path, mount_path, volume_mount_step_template, volume_template, mounted_param_paths)
@@ -346,7 +346,7 @@ def _process_output_artifacts(outputs_dict: Dict[Text, Any],
             parameter_name = sanitize_k8s_name(artifact['name'], allow_capital_underscore=True, max_length=float('Inf'))
             artifact_name = artifact_to_result_mapping.get(parameter_name, parameter_name)
             if parameter_name in replaced_param_list:
-                artifact_items.append([artifact_name, "$(results.%s.path)" % sanitize_k8s_name(artifact_name)])
+                artifact_items.append([artifact_name, "$(results.%s.path)" % sanitize_k8s_name(artifact_name, allow_capital=True)])
             else:
                 artifact_items.append([artifact_name, artifact['path']])
                 mount_path = artifact['path'].rsplit("/", 1)[0]
@@ -633,7 +633,7 @@ def _op_to_template(op: BaseOp,
                     for key in result_size_map.keys():
                         # Replace main step results that are not in the first bin to the Tekton home path
                         if key not in verified_result_size_map[0].keys():
-                            sanitize_key = sanitize_k8s_name(key)
+                            sanitize_key = sanitize_k8s_name(key, allow_capital=True)
                             for i, a in enumerate(step['args']):
                                 a = a.replace('$(results.%s.path)' % sanitize_key, '%s%s' % (TEKTON_HOME_RESULT_PATH, sanitize_key))
                                 step['args'][i] = a
@@ -648,6 +648,6 @@ def _op_to_template(op: BaseOp,
         # Update actifact item location to the latest stage in order to properly track and store all the artifacts.
         for i, artifact in enumerate(artifact_items[op.name]):
             if artifact[0] not in verified_result_size_map[step_counter].keys():
-                artifact[1] = '%s%s' % (TEKTON_HOME_RESULT_PATH, sanitize_k8s_name(artifact[0]))
+                artifact[1] = '%s%s' % (TEKTON_HOME_RESULT_PATH, sanitize_k8s_name(artifact[0], allow_capital=True))
                 artifact_items[op.name][i] = artifact
     return template
diff --git a/sdk/python/kfp_tekton/compiler/compiler.py b/sdk/python/kfp_tekton/compiler/compiler.py
index c36b041480e..b75f839560e 100644
--- a/sdk/python/kfp_tekton/compiler/compiler.py
+++ b/sdk/python/kfp_tekton/compiler/compiler.py
@@ -326,7 +326,7 @@ def _group_to_dag_template(self, group, inputs, outputs, dependencies, pipeline_
                 replace_str = param[1] + '-'
                 self.loops_pipeline[group_name]['spec']['params'].append({
                   'name': param[0], 'value': '$(tasks.%s.results.%s)' % (
-                    param[1], sanitize_k8s_name(param[0].replace(replace_str, '', 1))
+                    param[1], sanitize_k8s_name(param[0].replace(replace_str, '', 1), allow_capital=True)
                   )
                 })
               if not param[1]:
@@ -370,7 +370,7 @@ def input_helper(custom_task, sub_group, param_list):
             replace_str = param[1] + '-'
             custom_task['spec']['params'].append({
               'name': param[0], 'value': '$(tasks.%s.results.%s)' % (
-                param[1], sanitize_k8s_name(param[0].replace(replace_str, '', 1))
+                param[1], sanitize_k8s_name(param[0].replace(replace_str, '', 1), allow_capital=True)
               )
             })
           if not param[1] and param[0] not in param_list:
@@ -385,7 +385,7 @@ def process_pipelineparam(s):
           if pipe_param[0] == '':
             s = s.replace("{{pipelineparam:op=%s;name=%s}}" % pipe_param, '$(params.%s)' % pipe_param[1])
           else:
-            param_name = sanitize_k8s_name(pipe_param[1])
+            param_name = sanitize_k8s_name(pipe_param[1], allow_capital=True)
             s = s.replace("{{pipelineparam:op=%s;name=%s}}" % pipe_param, '$(tasks.%s.results.%s)' % (
               sanitize_k8s_name(pipe_param[0]),
               param_name))
@@ -398,7 +398,7 @@ def process_pipelineparam(s):
           if v.op_name is None:
             v = '$(params.%s)' % v.name
           else:
-            param_name = sanitize_k8s_name(v.name)
+            param_name = sanitize_k8s_name(v.name, allow_capital=True)
             v = '$(tasks.%s.results.%s)' % (
               sanitize_k8s_name(v.op_name),
               param_name)
@@ -467,7 +467,7 @@ def process_pipelineparam(s):
         if pipeline_param.op_name is None:
           withparam_value = '$(params.%s)' % pipeline_param.name
         else:
-          param_name = sanitize_k8s_name(pipeline_param.name)
+          param_name = sanitize_k8s_name(pipeline_param.name, allow_capital=True)
           withparam_value = '$(tasks.%s.results.%s)' % (
             sanitize_k8s_name(pipeline_param.op_name),
             param_name)
@@ -495,7 +495,7 @@ def process_pipelineparam(s):
                 if v.op_name is None:
                   v = '$(params.%s)' % v.name
                 else:
-                  param_name = sanitize_k8s_name(v.name)
+                  param_name = sanitize_k8s_name(v.name, allow_capital=True)
                   v = '$(tasks.%s.results.%s)' % (
                     sanitize_k8s_name(v.op_name),
                     param_name)
@@ -522,7 +522,8 @@ def process_parameter(parameter):
         parameter_value = str(parameter)
         if isinstance(parameter, dsl.PipelineParam):
           if parameter.op_name:
-            parameter_value = '$(tasks.' + parameter.op_name + '.results.' + sanitize_k8s_name(parameter.name) + ')'
+            parameter_value = '$(tasks.' + parameter.op_name + '.results.' + \
+                               sanitize_k8s_name(parameter.name, allow_capital=True) + ')'
           else:
             parameter_value = '$(params.' + parameter.name + ')'
         return parameter_value
@@ -956,7 +957,7 @@ def is_custom_task_output(operand) -> bool:
               def map_cel_vars(a):
                 if a.get('type', '') == dsl.PipelineParam:
                   op_name = sanitize_k8s_name(a['op_name'])
-                  output_name = sanitize_k8s_name(a['output_name'])
+                  output_name = sanitize_k8s_name(a['output_name'], allow_capital=True)
                   return '$(tasks.%s.results.%s)' % (op_name, output_name)
                 else:
                   return a.get('value', '')
@@ -1083,13 +1084,15 @@ def map_cel_vars(a):
           # Process input parameters if needed
           if isinstance(condition.operand1, dsl.PipelineParam):
             if condition.operand1.op_name:
-              operand_value = '$(tasks.' + condition.operand1.op_name + '.results.' + sanitize_k8s_name(condition.operand1.name) + ')'
+              operand_value = '$(tasks.' + condition.operand1.op_name + '.results.' + \
+                               sanitize_k8s_name(condition.operand1.name, allow_capital=True) + ')'
             else:
               operand_value = '$(params.' + condition.operand1.name + ')'
             input_params.append(operand_value)
           if isinstance(condition.operand2, dsl.PipelineParam):
             if condition.operand2.op_name:
-              operand_value = '$(tasks.' + condition.operand2.op_name + '.results.' + sanitize_k8s_name(condition.operand2.name) + ')'
+              operand_value = '$(tasks.' + condition.operand2.op_name + '.results.' + \
+                               sanitize_k8s_name(condition.operand2.name, allow_capital=True) + ')'
             else:
               operand_value = '$(params.' + condition.operand2.name + ')'
             input_params.append(operand_value)
@@ -1226,7 +1229,8 @@ def get_when_task(input_task_when, depended_conditions):
                 for pp in op.inputs:
                   if pipeline_param == pp.full_name:
                     # Parameters from Tekton results need to be sanitized
-                    substitute_param = '$(tasks.%s.results.%s)' % (sanitize_k8s_name(pp.op_name), sanitize_k8s_name(pp.name))
+                    substitute_param = '$(tasks.%s.results.%s)' % (sanitize_k8s_name(pp.op_name),
+                                                                   sanitize_k8s_name(pp.name, allow_capital=True))
                     tp['value'] = re.sub('\$\(inputs.params.%s\)' % pipeline_param, substitute_param, tp.get('value', ''))
                     break
         # Not necessary for Tekton execution
@@ -1406,15 +1410,15 @@ def _sanitize_and_inject_artifact(self, pipeline: dsl.Pipeline, pipeline_conf=No
           if len(param.op_name) > 128:
             raise ValueError('Input parameter cannot be longer than 128 characters. \
              \nInput name: %s. \nOp name: %s' % (param.op_name, op.name))
-          param.op_name = sanitize_k8s_name(param.op_name, max_length=float('inf'))
+          param.op_name = sanitize_k8s_name(param.op_name, max_length=float('inf'), allow_capital=True)
       # sanitized output params
       for param in op.outputs.values():
         param.name = sanitize_k8s_name(param.name, True)
         if param.op_name:
-          param.op_name = sanitize_k8s_name(param.op_name)
+          param.op_name = sanitize_k8s_name(param.op_name, allow_capital=True)
       if op.output is not None and not isinstance(op.output, dsl._container_op._MultipleOutputsError):
         op.output.name = sanitize_k8s_name(op.output.name, True)
-        op.output.op_name = sanitize_k8s_name(op.output.op_name)
+        op.output.op_name = sanitize_k8s_name(op.output.op_name, allow_capital=True)
       if op.dependent_names:
         op.dependent_names = [sanitize_k8s_name(name) for name in op.dependent_names]
       if isinstance(op, dsl.ContainerOp) and op.file_outputs is not None:
diff --git a/sdk/python/kfp_tekton/tekton.py b/sdk/python/kfp_tekton/tekton.py
index 3e79cb48075..6e941e4fd05 100644
--- a/sdk/python/kfp_tekton/tekton.py
+++ b/sdk/python/kfp_tekton/tekton.py
@@ -106,7 +106,8 @@ def AnySequencer(any: Iterable[Union[dsl.ContainerOp, ConditionOperator]],
 
 def processOperand(operand) -> (str, str):
     if isinstance(operand, dsl.PipelineParam):
-        return "results_" + sanitize_k8s_name(operand.op_name) + "_" + sanitize_k8s_name(operand.name), operand.op_name
+        return "results_" + sanitize_k8s_name(operand.op_name) + "_" + \
+                sanitize_k8s_name(operand.name, allow_capital=True), operand.op_name
     else:
         # Do the same as in _get_super_condition_template to check whehter it's int
         try:
diff --git a/sdk/python/tests/compiler/compiler_tests.py b/sdk/python/tests/compiler/compiler_tests.py
index 0181893475a..92fa52a48fb 100644
--- a/sdk/python/tests/compiler/compiler_tests.py
+++ b/sdk/python/tests/compiler/compiler_tests.py
@@ -113,6 +113,13 @@ def test_sequential_workflow(self):
     from .testdata.sequential import sequential_pipeline
     self._test_pipeline_workflow(sequential_pipeline, 'sequential.yaml', skip_noninlined=True)
 
+  def test_custom_task_output_workflow(self):
+    """
+    Test compiling a custom task output workflow.
+    """
+    from .testdata.custom_task_output import uppercase_vs_lowercase
+    self._test_pipeline_workflow(uppercase_vs_lowercase, 'custom_task_output.yaml', skip_noninlined=True)
+
   def test_parallel_join_workflow(self):
     """
     Test compiling a parallel join workflow.
diff --git a/sdk/python/tests/compiler/testdata/any_sequencer.yaml b/sdk/python/tests/compiler/testdata/any_sequencer.yaml
index 097d2ca365e..b53c052f35d 100644
--- a/sdk/python/tests/compiler/testdata/any_sequencer.yaml
+++ b/sdk/python/tests/compiler/testdata/any_sequencer.yaml
@@ -26,7 +26,7 @@ metadata:
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"any-test": [["status", "$(results.status.path)"]],
-      "flip-coin": [["Output", "$(results.output.path)"]], "sleepcomponent": [], "sleepcomponent-2":
+      "flip-coin": [["Output", "$(results.Output.path)"]], "sleepcomponent": [], "sleepcomponent-2":
       [], "sleepcomponent-3": [], "sleepcomponent-4": []}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
@@ -98,7 +98,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -145,7 +145,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:alpine3.6
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -195,7 +195,7 @@ spec:
           - --statusPath
           - $(results.status.path)
           - -c
-          - results_flip-coin_output == 'heads'
+          - results_flip-coin_Output == 'heads'
           command:
           - any-task
           image: dspipelines/any-sequencer:latest
@@ -211,7 +211,7 @@ spec:
           annotations:
             pipelines.kubeflow.org/component_spec_digest: '{"name": "any_test", "outputs":
               [{"description": "The output file to create the status", "name": "status"}],
-              "version": "any_test@sha256=03b2b97be43cc77f2df70fd915a8fcd2e061341d7904af268cb4b2a4bbd86a76"}'
+              "version": "any_test@sha256=c4aaac826d09733534b96ec4a17c6646fa9d71e55d1e4bece1a5c0d20873e563"}'
             tekton.dev/template: ''
         params:
         - name: pipelineRun-name
diff --git a/sdk/python/tests/compiler/testdata/artifact_passing_using_volume.yaml b/sdk/python/tests/compiler/testdata/artifact_passing_using_volume.yaml
index a69c95d9582..dc10eee6332 100644
--- a/sdk/python/tests/compiler/testdata/artifact_passing_using_volume.yaml
+++ b/sdk/python/tests/compiler/testdata/artifact_passing_using_volume.yaml
@@ -36,8 +36,8 @@ metadata:
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"consumer": [], "metadata-and-metrics": [["mlpipeline-ui-metadata",
       "/tmp/outputs/mlpipeline_ui_metadata/data"], ["mlpipeline-metrics", "/tmp/outputs/mlpipeline_metrics/data"]],
-      "processor": [["Output-1", "$(results.output-1.path)"], ["Output-2", "$(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2"]],
-      "producer": [["Output-1", "$(results.output-1.path)"], ["Output-2", "$(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2"]]}'
+      "processor": [["Output-1", "$(results.Output-1.path)"], ["Output-2", "$(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2"]],
+      "producer": [["Output-1", "$(results.Output-1.path)"], ["Output-2", "$(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"name": "Artifact passing pipeline"}'
@@ -49,7 +49,7 @@ spec:
         steps:
         - name: main
           args:
-          - $(results.output-1.path)
+          - $(results.Output-1.path)
           - $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2
           command:
           - sh
@@ -85,12 +85,12 @@ spec:
             fi
             ARTIFACT_SIZE=`wc -c $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2${SUFFIX} | awk '{print $1}'`
             TOTAL_SIZE=$( expr $TOTAL_SIZE + $ARTIFACT_SIZE)
-            touch $(results.output-2.path)
+            touch $(results.Output-2.path)
             if [[ $TOTAL_SIZE -lt 3072 ]]; then
               if [ -d $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2 ]; then
-                tar -tzf $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2.tar.gz > $(results.output-2.path)
+                tar -tzf $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2.tar.gz > $(results.Output-2.path)
               elif ! awk "/[^[:print:]]/{f=1} END{exit !f}" $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2; then
-                cp $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2 $(results.output-2.path)
+                cp $(workspaces.producer.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2 $(results.Output-2.path)
               fi
             fi
           onError: continue
@@ -100,10 +100,10 @@ spec:
               fieldRef:
                 fieldPath: metadata.labels['custom.tekton.dev/originalPipelineRun']
         results:
-        - name: output-1
+        - name: Output-1
           type: string
           description: /tmp/outputs/Output_1/data
-        - name: output-2
+        - name: Output-2
           type: string
           description: /tmp/outputs/Output_2/data
         - name: taskrun-name
@@ -126,7 +126,7 @@ spec:
     - name: processor
       params:
       - name: producer-Output-1
-        value: $(tasks.producer.results.output-1)
+        value: $(tasks.producer.results.Output-1)
       - name: producer-trname
         value: $(tasks.producer.results.taskrun-name)
       taskSpec:
@@ -135,7 +135,7 @@ spec:
           args:
           - $(inputs.params.producer-Output-1)
           - $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(params.producer-trname)/Output-2
-          - $(results.output-1.path)
+          - $(results.Output-1.path)
           - $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2
           command:
           - sh
@@ -171,12 +171,12 @@ spec:
             fi
             ARTIFACT_SIZE=`wc -c $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2${SUFFIX} | awk '{print $1}'`
             TOTAL_SIZE=$( expr $TOTAL_SIZE + $ARTIFACT_SIZE)
-            touch $(results.output-2.path)
+            touch $(results.Output-2.path)
             if [[ $TOTAL_SIZE -lt 3072 ]]; then
               if [ -d $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2 ]; then
-                tar -tzf $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2.tar.gz > $(results.output-2.path)
+                tar -tzf $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2.tar.gz > $(results.Output-2.path)
               elif ! awk "/[^[:print:]]/{f=1} END{exit !f}" $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2; then
-                cp $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2 $(results.output-2.path)
+                cp $(workspaces.processor.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output-2 $(results.Output-2.path)
               fi
             fi
           onError: continue
@@ -189,10 +189,10 @@ spec:
         - name: producer-Output-1
         - name: producer-trname
         results:
-        - name: output-1
+        - name: Output-1
           type: string
           description: /tmp/outputs/Output_1/data
-        - name: output-2
+        - name: Output-2
           type: string
           description: /tmp/outputs/Output_2/data
         - name: taskrun-name
@@ -217,7 +217,7 @@ spec:
     - name: consumer
       params:
       - name: processor-Output-1
-        value: $(tasks.processor.results.output-1)
+        value: $(tasks.processor.results.Output-1)
       - name: processor-trname
         value: $(tasks.processor.results.taskrun-name)
       taskSpec:
diff --git a/sdk/python/tests/compiler/testdata/big_data_passing.yaml b/sdk/python/tests/compiler/testdata/big_data_passing.yaml
index 6b28a0bddbc..3b583809fcc 100644
--- a/sdk/python/tests/compiler/testdata/big_data_passing.yaml
+++ b/sdk/python/tests/compiler/testdata/big_data_passing.yaml
@@ -38,7 +38,7 @@ metadata:
     tekton.dev/artifact_bucket: mlpipeline
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
-    tekton.dev/artifact_items: '{"gen-params": [["Output", "$(results.output.path)"]],
+    tekton.dev/artifact_items: '{"gen-params": [["Output", "$(results.Output.path)"]],
       "print-params": [], "print-text": [], "print-text-2": [], "print-text-3": [],
       "print-text-4": [], "print-text-5": [], "repeat-line": [["output_text", "$(workspaces.repeat-line.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/output_text"]],
       "split-text-lines": [["even_lines", "$(workspaces.split-text-lines.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/even_lines"],
@@ -658,12 +658,12 @@ spec:
             fi
             ARTIFACT_SIZE=`wc -c $(workspaces.sum-numbers.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output${SUFFIX} | awk '{print $1}'`
             TOTAL_SIZE=$( expr $TOTAL_SIZE + $ARTIFACT_SIZE)
-            touch $(results.output.path)
+            touch $(results.Output.path)
             if [[ $TOTAL_SIZE -lt 3072 ]]; then
               if [ -d $(workspaces.sum-numbers.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output ]; then
-                tar -tzf $(workspaces.sum-numbers.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output.tar.gz > $(results.output.path)
+                tar -tzf $(workspaces.sum-numbers.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output.tar.gz > $(results.Output.path)
               elif ! awk "/[^[:print:]]/{f=1} END{exit !f}" $(workspaces.sum-numbers.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output; then
-                cp $(workspaces.sum-numbers.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output $(results.output.path)
+                cp $(workspaces.sum-numbers.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output $(results.Output.path)
               fi
             fi
           onError: continue
@@ -675,7 +675,7 @@ spec:
         params:
         - name: write-numbers-trname
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         - name: taskrun-name
@@ -761,7 +761,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -808,7 +808,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -825,7 +825,7 @@ spec:
     - name: print-params
       params:
       - name: gen-params-Output
-        value: $(tasks.gen-params.results.output)
+        value: $(tasks.gen-params.results.Output)
       taskSpec:
         steps:
         - name: main
diff --git a/sdk/python/tests/compiler/testdata/conditions_and_loops.yaml b/sdk/python/tests/compiler/testdata/conditions_and_loops.yaml
index c0ef2f76a59..31afd9fc22d 100644
--- a/sdk/python/tests/compiler/testdata/conditions_and_loops.yaml
+++ b/sdk/python/tests/compiler/testdata/conditions_and_loops.yaml
@@ -27,9 +27,9 @@ metadata:
     tekton.dev/artifact_bucket: mlpipeline
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
-    tekton.dev/artifact_items: '{"add-numbers": [["Output", "$(results.output.path)"]],
-      "notify-failure": [], "notify-success": [], "print-number": [["Output", "$(results.output.path)"]],
-      "produce-numbers": [["Output", "$(results.output.path)"]]}'
+    tekton.dev/artifact_items: '{"add-numbers": [["Output", "$(results.Output.path)"]],
+      "notify-failure": [], "notify-success": [], "print-number": [["Output", "$(results.Output.path)"]],
+      "produce-numbers": [["Output", "$(results.Output.path)"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"inputs": [{"default": "3", "name": "n",
@@ -59,7 +59,7 @@ spec:
           - --n
           - $(inputs.params.n)
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -117,7 +117,7 @@ spec:
         params:
         - name: "n"
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -136,7 +136,7 @@ spec:
       name: conditions-and-loops-for-loop-1
       params:
       - name: produce-numbers-Output-loop-item
-        value: $(tasks.produce-numbers.results.output)
+        value: $(tasks.produce-numbers.results.Output)
       - name: threshold
         value: $(params.threshold)
       taskSpec:
@@ -163,7 +163,7 @@ spec:
                   - --b
                   - '10'
                   - '----output-paths'
-                  - $(results.output.path)
+                  - $(results.Output.path)
                   command:
                   - sh
                   - -ec
@@ -214,7 +214,7 @@ spec:
                 - name: produce-numbers-Output-loop-item
                   type: string
                 results:
-                - name: output
+                - name: Output
                   type: string
                   description: /tmp/outputs/Output/data
                 metadata:
@@ -231,7 +231,7 @@ spec:
             - name: print-number
               params:
               - name: add-numbers-Output
-                value: $(tasks.add-numbers.results.output)
+                value: $(tasks.add-numbers.results.Output)
               taskSpec:
                 steps:
                 - name: main
@@ -239,7 +239,7 @@ spec:
                   - --a
                   - $(inputs.params.add-numbers-Output)
                   - '----output-paths'
-                  - $(results.output.path)
+                  - $(results.Output.path)
                   command:
                   - sh
                   - -ec
@@ -289,7 +289,7 @@ spec:
                 - name: add-numbers-Output
                   type: string
                 results:
-                - name: output
+                - name: Output
                   type: string
                   description: /tmp/outputs/Output/data
                 metadata:
@@ -378,7 +378,7 @@ spec:
             - name: condition-2
               params:
               - name: operand1
-                value: $(tasks.print-number.results.output)
+                value: $(tasks.print-number.results.Output)
               - name: operand2
                 value: $(params.threshold)
               - name: operator
@@ -427,7 +427,7 @@ spec:
             - name: condition-3
               params:
               - name: operand1
-                value: $(tasks.print-number.results.output)
+                value: $(tasks.print-number.results.Output)
               - name: operand2
                 value: $(params.threshold)
               - name: operator
diff --git a/sdk/python/tests/compiler/testdata/conditions_and_loops_noninlined.yaml b/sdk/python/tests/compiler/testdata/conditions_and_loops_noninlined.yaml
index 41ec443a434..2d7de7914cd 100644
--- a/sdk/python/tests/compiler/testdata/conditions_and_loops_noninlined.yaml
+++ b/sdk/python/tests/compiler/testdata/conditions_and_loops_noninlined.yaml
@@ -27,9 +27,9 @@ metadata:
     tekton.dev/artifact_bucket: mlpipeline
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
-    tekton.dev/artifact_items: '{"add-numbers": [["Output", "$(results.output.path)"]],
-      "notify-failure": [], "notify-success": [], "print-number": [["Output", "$(results.output.path)"]],
-      "produce-numbers": [["Output", "$(results.output.path)"]]}'
+    tekton.dev/artifact_items: '{"add-numbers": [["Output", "$(results.Output.path)"]],
+      "notify-failure": [], "notify-success": [], "print-number": [["Output", "$(results.Output.path)"]],
+      "produce-numbers": [["Output", "$(results.Output.path)"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"inputs": [{"default": "3", "name": "n",
@@ -47,9 +47,9 @@ metadata:
       "tekton.dev/template": ""}, "labels": {"pipelines.kubeflow.org/cache_enabled":
       "true", "pipelines.kubeflow.org/generation": "", "pipelines.kubeflow.org/pipelinename":
       ""}}, "params": [{"name": "produce-numbers-Output-loop-item", "type": "string"}],
-      "results": [{"description": "/tmp/outputs/Output/data", "name": "output", "type":
+      "results": [{"description": "/tmp/outputs/Output/data", "name": "Output", "type":
       "string"}], "steps": [{"args": ["--a", "$(inputs.params.produce-numbers-Output-loop-item)",
-      "--b", "10", "----output-paths", "$(results.output.path)"], "command": ["sh",
+      "--b", "10", "----output-paths", "$(results.Output.path)"], "command": ["sh",
       "-ec", "program_path=$(mktemp)\nprintf \"%s\" \"$0\" > \"$program_path\"\npython3
       -u \"$program_path\" \"$@\"\n", "def add_numbers(a, b):\n    print(a + b)\n    return
       a + b\n\ndef _serialize_int(int_value: int) -> str:\n    if isinstance(int_value,
@@ -65,16 +65,16 @@ metadata:
       os\nfor idx, output_file in enumerate(_output_files):\n    try:\n        os.makedirs(os.path.dirname(output_file))\n    except
       OSError:\n        pass\n    with open(output_file, ''w'') as f:\n        f.write(_output_serializers[idx](_outputs[idx]))\n"],
       "image": "python:3.7", "name": "main"}]}, "timeout": "525600m"}, {"name": "print-number",
-      "params": [{"name": "add-numbers-Output", "value": "$(tasks.add-numbers.results.output)"}],
+      "params": [{"name": "add-numbers-Output", "value": "$(tasks.add-numbers.results.Output)"}],
       "taskSpec": {"metadata": {"annotations": {"pipelines.kubeflow.org/component_spec_digest":
       "{\"name\": \"Print number\", \"outputs\": [{\"name\": \"Output\", \"type\":
       \"Integer\"}], \"version\": \"Print number@sha256=7ad81f52d1b478fd168c0234b16a496672bdfc43da71a71fcdc5d688791f04cf\"}",
       "tekton.dev/template": ""}, "labels": {"pipelines.kubeflow.org/cache_enabled":
       "true", "pipelines.kubeflow.org/generation": "", "pipelines.kubeflow.org/pipelinename":
       ""}}, "params": [{"name": "add-numbers-Output", "type": "string"}], "results":
-      [{"description": "/tmp/outputs/Output/data", "name": "output", "type": "string"}],
+      [{"description": "/tmp/outputs/Output/data", "name": "Output", "type": "string"}],
       "steps": [{"args": ["--a", "$(inputs.params.add-numbers-Output)", "----output-paths",
-      "$(results.output.path)"], "command": ["sh", "-ec", "program_path=$(mktemp)\nprintf
+      "$(results.Output.path)"], "command": ["sh", "-ec", "program_path=$(mktemp)\nprintf
       \"%s\" \"$0\" > \"$program_path\"\npython3 -u \"$program_path\" \"$@\"\n", "def
       print_number(a):\n    print(a)\n    return a\n\ndef _serialize_int(int_value:
       int) -> str:\n    if isinstance(int_value, str):\n        return int_value\n    if
@@ -109,7 +109,7 @@ metadata:
       = vars(_parser.parse_args())\n\n_outputs = notify_failure(**_parsed_args)\n"],
       "image": "python:3.7", "name": "main"}]}, "timeout": "525600m", "when": [{"input":
       "$(tasks.condition-3.results.outcome)", "operator": "in", "values": ["true"]}]},
-      {"name": "condition-2", "params": [{"name": "operand1", "value": "$(tasks.print-number.results.output)"},
+      {"name": "condition-2", "params": [{"name": "operand1", "value": "$(tasks.print-number.results.Output)"},
       {"name": "operand2", "value": "$(params.threshold)"}, {"name": "operator", "value":
       ">"}], "taskSpec": {"params": [{"name": "operand1", "type": "string"}, {"name":
       "operand2", "type": "string"}, {"name": "operator", "type": "string"}], "results":
@@ -119,7 +119,7 @@ metadata:
       \"w\")\nf.write(outcome)\nf.close()\n", "$(inputs.params.operand1)", "$(inputs.params.operand2)"],
       "command": ["sh", "-ec", "program_path=$(mktemp); printf \"%s\" \"$0\" > \"$program_path\";  python3
       -u \"$program_path\" \"$1\" \"$2\""], "image": "python:alpine3.6", "name": "main"}]}},
-      {"name": "condition-3", "params": [{"name": "operand1", "value": "$(tasks.print-number.results.output)"},
+      {"name": "condition-3", "params": [{"name": "operand1", "value": "$(tasks.print-number.results.Output)"},
       {"name": "operand2", "value": "$(params.threshold)"}, {"name": "operator", "value":
       "<="}], "taskSpec": {"params": [{"name": "operand1", "type": "string"}, {"name":
       "operand2", "type": "string"}, {"name": "operator", "type": "string"}], "results":
@@ -153,7 +153,7 @@ spec:
           - --n
           - $(inputs.params.n)
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -211,7 +211,7 @@ spec:
         params:
         - name: "n"
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -234,7 +234,7 @@ spec:
         name: conditions-and-loops-for-loop-1
       params:
       - name: produce-numbers-Output-loop-item
-        value: $(tasks.produce-numbers.results.output)
+        value: $(tasks.produce-numbers.results.Output)
       - name: threshold
         value: $(params.threshold)
   timeout: 525600m
diff --git a/sdk/python/tests/compiler/testdata/conditions_with_global_params.yaml b/sdk/python/tests/compiler/testdata/conditions_with_global_params.yaml
index 4dcc30d2aa0..0895d8a823f 100644
--- a/sdk/python/tests/compiler/testdata/conditions_with_global_params.yaml
+++ b/sdk/python/tests/compiler/testdata/conditions_with_global_params.yaml
@@ -26,8 +26,8 @@ metadata:
     tekton.dev/artifact_bucket: mlpipeline
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
-    tekton.dev/artifact_items: '{"add-numbers": [["Output", "$(results.output.path)"]],
-      "notify-failure": [], "notify-success": [], "print-number": [["Output", "$(results.output.path)"]]}'
+    tekton.dev/artifact_items: '{"add-numbers": [["Output", "$(results.Output.path)"]],
+      "notify-failure": [], "notify-success": [], "print-number": [["Output", "$(results.Output.path)"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"inputs": [{"default": "5", "name": "n",
@@ -66,7 +66,7 @@ spec:
           - --b
           - $(inputs.params.lower_bound)
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -117,7 +117,7 @@ spec:
         - name: lower_bound
         - name: "n"
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -134,7 +134,7 @@ spec:
     - name: print-number
       params:
       - name: add-numbers-Output
-        value: $(tasks.add-numbers.results.output)
+        value: $(tasks.add-numbers.results.Output)
       taskSpec:
         steps:
         - name: main
@@ -142,7 +142,7 @@ spec:
           - --a
           - $(inputs.params.add-numbers-Output)
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -191,7 +191,7 @@ spec:
         params:
         - name: add-numbers-Output
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -280,7 +280,7 @@ spec:
     - name: condition-1
       params:
       - name: operand1
-        value: $(tasks.print-number.results.output)
+        value: $(tasks.print-number.results.Output)
       - name: operand2
         value: $(params.threshold)
       - name: operator
@@ -321,7 +321,7 @@ spec:
     - name: condition-2
       params:
       - name: operand1
-        value: $(tasks.print-number.results.output)
+        value: $(tasks.print-number.results.Output)
       - name: operand2
         value: $(params.threshold)
       - name: operator
diff --git a/sdk/python/tests/compiler/testdata/create_component_from_func.yaml b/sdk/python/tests/compiler/testdata/create_component_from_func.yaml
index 156e64549f7..48e40845818 100644
--- a/sdk/python/tests/compiler/testdata/create_component_from_func.yaml
+++ b/sdk/python/tests/compiler/testdata/create_component_from_func.yaml
@@ -33,8 +33,8 @@ metadata:
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"get-subdirectory": [["Subdir", "$(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir"]],
-      "list-items": [["Items", "$(results.items.path)"]], "list-items-2": [["Items",
-      "$(results.items.path)"]], "produce-dir-with-files-python-op": [["output_dir",
+      "list-items": [["Items", "$(results.Items.path)"]], "list-items-2": [["Items",
+      "$(results.Items.path)"]], "produce-dir-with-files-python-op": [["output_dir",
       "$(workspaces.produce-dir-with-files-python-op.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/output_dir"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
@@ -184,12 +184,12 @@ spec:
             fi
             ARTIFACT_SIZE=`wc -c $(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir${SUFFIX} | awk '{print $1}'`
             TOTAL_SIZE=$( expr $TOTAL_SIZE + $ARTIFACT_SIZE)
-            touch $(results.subdir.path)
+            touch $(results.Subdir.path)
             if [[ $TOTAL_SIZE -lt 3072 ]]; then
               if [ -d $(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir ]; then
-                tar -tzf $(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir.tar.gz > $(results.subdir.path)
+                tar -tzf $(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir.tar.gz > $(results.Subdir.path)
               elif ! awk "/[^[:print:]]/{f=1} END{exit !f}" $(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir; then
-                cp $(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir $(results.subdir.path)
+                cp $(workspaces.get-subdirectory.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Subdir $(results.Subdir.path)
               fi
             fi
           onError: continue
@@ -201,7 +201,7 @@ spec:
         params:
         - name: produce-dir-with-files-python-op-trname
         results:
-        - name: subdir
+        - name: Subdir
           type: string
           description: /tmp/outputs/Subdir/data
         - name: taskrun-name
@@ -240,7 +240,7 @@ spec:
             #ls --almost-all --recursive "$0" > "$1"
             ls -A -R "$0" > "$1"
           - $(workspaces.list-items.path)/artifacts/$ORIG_PR_NAME/$(params.get-subdirectory-trname)/Subdir
-          - $(results.items.path)
+          - $(results.Items.path)
           image: alpine
           env:
           - name: ORIG_PR_NAME
@@ -250,7 +250,7 @@ spec:
         params:
         - name: get-subdirectory-trname
         results:
-        - name: items
+        - name: Items
           type: string
           description: /tmp/outputs/Items/data
         metadata:
@@ -289,7 +289,7 @@ spec:
             ls -A -R "$1" >> "$2"
           - $(workspaces.list-items-2.path)/artifacts/$ORIG_PR_NAME/$(params.get-subdirectory-trname)/Subdir
           - $(workspaces.list-items-2.path)/artifacts/$ORIG_PR_NAME/$(params.produce-dir-with-files-python-op-trname)/output_dir
-          - $(results.items.path)
+          - $(results.Items.path)
           image: alpine
           env:
           - name: ORIG_PR_NAME
@@ -300,7 +300,7 @@ spec:
         - name: get-subdirectory-trname
         - name: produce-dir-with-files-python-op-trname
         results:
-        - name: items
+        - name: Items
           type: string
           description: /tmp/outputs/Items/data
         metadata:
diff --git a/sdk/python/tests/compiler/testdata/custom_task_long_name.yaml b/sdk/python/tests/compiler/testdata/custom_task_long_name.yaml
index 58e452bd530..6525ccd58a7 100644
--- a/sdk/python/tests/compiler/testdata/custom_task_long_name.yaml
+++ b/sdk/python/tests/compiler/testdata/custom_task_long_name.yaml
@@ -30,7 +30,7 @@ metadata:
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"gcs-downloadgcs-downloadgcs-downloadgcs-download":
-      [["Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Dat", "$(results.data-123data-123data-123data-123data-123data-123dat.path)"]],
+      [["Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Dat", "$(results.Data-123Data-123Data-123Data-123Data-123Data-123Dat.path)"]],
       "printprintprintprintprintprintprintprintprintprint": []}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
@@ -56,7 +56,7 @@ spec:
           - |
             gsutil cat $0 | tee $1
           - $(inputs.params.url1)
-          - $(results.data-123data-123data-123data-123data-123data-123dat.path)
+          - $(results.Data-123Data-123Data-123Data-123Data-123Data-123Dat.path)
           command:
           - sh
           - -c
@@ -64,7 +64,7 @@ spec:
         params:
         - name: url1
         results:
-        - name: data-123data-123data-123data-123data-123data-123dat
+        - name: Data-123Data-123Data-123Data-123Data-123Data-123Dat
           type: string
           description: /tmp/outputs/Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123/data
         metadata:
@@ -82,7 +82,7 @@ spec:
     - name: printprintprintprintprintprintprintprintprintprint
       params:
       - name: gcs-downloadgcs-downloadgcs-downloadgcs-download-Data-_123Data-_123Data-_123Data-_123Data-_123Data-_123Dat
-        value: $(tasks.gcs-downloadgcs-downloadgcs-downloadgcs-download.results.data-123data-123data-123data-123data-123data-123dat)
+        value: $(tasks.gcs-downloadgcs-downloadgcs-downloadgcs-download.results.Data-123Data-123Data-123Data-123Data-123Data-123Dat)
       taskSpec:
         steps:
         - name: main
@@ -105,7 +105,7 @@ spec:
     - name: condition-cel
       params:
       - name: outcome
-        value: '''$(tasks.gcs-downloadgcs-downloadgcs-downloadgcs-download.results.data-123data-123data-123data-123data-123data-123dat)''
+        value: '''$(tasks.gcs-downloadgcs-downloadgcs-downloadgcs-download.results.Data-123Data-123Data-123Data-123Data-123Data-123Dat)''
           == ''heads'''
       taskRef:
         name: cel_condition
diff --git a/sdk/python/tests/compiler/testdata/custom_task_output.py b/sdk/python/tests/compiler/testdata/custom_task_output.py
new file mode 100644
index 00000000000..aeedcbc5b1e
--- /dev/null
+++ b/sdk/python/tests/compiler/testdata/custom_task_output.py
@@ -0,0 +1,111 @@
+# Copyright 2022 kubeflow.org
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import itertools
+
+from kfp import dsl, components
+from kfp_tekton.tekton import TEKTON_CUSTOM_TASK_IMAGES
+from kfp_tekton.compiler import TektonCompiler
+import yaml
+
+
+ARTIFACT_FETCHER_IMAGE_NAME = "fetcher/image:latest"
+TEKTON_CUSTOM_TASK_IMAGES = TEKTON_CUSTOM_TASK_IMAGES.append(ARTIFACT_FETCHER_IMAGE_NAME)
+
+_artifact_fetcher_no = 0
+
+
+def artifact_fetcher(**artifact_paths: str):
+  '''A containerOp template resolving some artifacts, given their paths.'''
+  global _artifact_fetcher_no
+  template_yaml = {
+    'name': f'artifact-fetcher-{_artifact_fetcher_no}',
+    'description': 'Artifact Fetch',
+    'inputs': [
+      {'name': name, 'type': 'String'}
+      for name in artifact_paths.keys()
+    ],
+    'outputs': [
+      {'name': name, 'type': 'Artifact'}
+      for name in artifact_paths.keys()
+    ],
+    'implementation': {
+      'container': {
+        'image': ARTIFACT_FETCHER_IMAGE_NAME,
+        'command': ['sh', '-c'],  # irrelevant
+        'args': [
+          '--apiVersion', 'fetcher.tekton.dev/v1alpha1',
+          '--kind', 'FETCHER',
+          '--name', 'artifact_fetcher',
+          *itertools.chain(*[
+            (f'--{name}', {'inputValue': name})
+            for name in artifact_paths.keys()
+          ])
+        ]
+      }
+    }
+  }
+  _artifact_fetcher_no += 1
+  template_str = yaml.dump(template_yaml, Dumper=yaml.SafeDumper)
+  template = components.load_component_from_text(template_str)
+  op = template(**{
+    k.lower(): v for k, v in artifact_paths.items()
+  })
+  op.add_pod_annotation("valid_container", "false")
+  return op
+
+
+_artifact_printer_no = 0
+
+
+def artifact_printer(artifact):
+  global _artifact_printer_no
+  template_yaml = {
+    'name': f'artifact-printer-{_artifact_printer_no}',
+    'description': 'Artifact Fetch',
+    'inputs': [
+      {'name': 'artifact', 'type': 'Artifact'}
+    ],
+    'outputs': [
+      {'name': 'stdout', 'type': 'String'}
+    ],
+    'implementation': {
+      'container': {
+        'image': 'alpine:3.6',
+        'command': [
+          'echo',
+          {'inputValue': 'artifact'},
+          '>',
+          {'outputPath': 'stdout'}
+        ]
+      }
+    }
+  }
+  _artifact_printer_no += 1
+  template_str = yaml.dump(template_yaml, Dumper=yaml.SafeDumper)
+  template = components.load_component_from_text(template_str)
+  op = template(artifact)
+  return op
+
+
+@dsl.pipeline("uppercase vs lowercase")
+def uppercase_vs_lowercase():
+  fetch_upper = artifact_fetcher(FOO='FOO')
+  fetch_lower = artifact_fetcher(foo='foo')
+  print_upper = artifact_printer(fetch_upper.output)
+  print_lower = artifact_printer(fetch_lower.output)
+
+
+if __name__ == '__main__':
+  TektonCompiler().compile(uppercase_vs_lowercase, __file__.replace('.py', '.yaml'))
diff --git a/sdk/python/tests/compiler/testdata/custom_task_output.yaml b/sdk/python/tests/compiler/testdata/custom_task_output.yaml
new file mode 100644
index 00000000000..acec9bc3abc
--- /dev/null
+++ b/sdk/python/tests/compiler/testdata/custom_task_output.yaml
@@ -0,0 +1,114 @@
+# Copyright 2021 kubeflow.org
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: tekton.dev/v1beta1
+kind: PipelineRun
+metadata:
+  name: uppercase-vs-lowercase
+  annotations:
+    tekton.dev/output_artifacts: '{"artifact-printer-0": [{"key": "artifacts/$PIPELINERUN/artifact-printer-0/stdout.tgz",
+      "name": "artifact-printer-0-stdout", "path": "/tmp/outputs/stdout/data"}], "artifact-printer-1":
+      [{"key": "artifacts/$PIPELINERUN/artifact-printer-1/stdout.tgz", "name": "artifact-printer-1-stdout",
+      "path": "/tmp/outputs/stdout/data"}]}'
+    tekton.dev/input_artifacts: '{"artifact-printer-0": [{"name": "artifact-fetcher-0-FOO",
+      "parent_task": "artifact-fetcher-0"}], "artifact-printer-1": [{"name": "artifact-fetcher-1-foo",
+      "parent_task": "artifact-fetcher-1"}]}'
+    tekton.dev/artifact_bucket: mlpipeline
+    tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
+    tekton.dev/artifact_endpoint_scheme: http://
+    tekton.dev/artifact_items: '{"artifact-printer-0": [["stdout", "$(results.stdout.path)"]],
+      "artifact-printer-1": [["stdout", "$(results.stdout.path)"]]}'
+    sidecar.istio.io/inject: "false"
+    pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
+    pipelines.kubeflow.org/pipeline_spec: '{"name": "uppercase vs lowercase"}'
+spec:
+  pipelineSpec:
+    tasks:
+    - name: artifact-fetcher-0
+      params:
+      - name: FOO
+        value: FOO
+      taskRef:
+        name: artifact_fetcher
+        apiVersion: fetcher.tekton.dev/v1alpha1
+        kind: FETCHER
+      timeout: 525600m
+    - name: artifact-fetcher-1
+      params:
+      - name: foo
+        value: foo
+      taskRef:
+        name: artifact_fetcher
+        apiVersion: fetcher.tekton.dev/v1alpha1
+        kind: FETCHER
+      timeout: 525600m
+    - name: artifact-printer-0
+      params:
+      - name: artifact-fetcher-0-FOO
+        value: $(tasks.artifact-fetcher-0.results.FOO)
+      taskSpec:
+        steps:
+        - name: main
+          command:
+          - echo
+          - $(inputs.params.artifact-fetcher-0-FOO)
+          - '>'
+          - $(results.stdout.path)
+          image: alpine:3.6
+        params:
+        - name: artifact-fetcher-0-FOO
+        results:
+        - name: stdout
+          type: string
+          description: /tmp/outputs/stdout/data
+        metadata:
+          labels:
+            pipelines.kubeflow.org/pipelinename: ''
+            pipelines.kubeflow.org/generation: ''
+            pipelines.kubeflow.org/cache_enabled: "true"
+          annotations:
+            pipelines.kubeflow.org/component_spec_digest: '{"name": "artifact-printer-0",
+              "outputs": [{"name": "stdout", "type": "String"}], "version": "artifact-printer-0@sha256=87fc76c64fcc79f4f4b95ee3428ade79e2a4bcdcbc03b4b9b17cef8db6c86dff"}'
+            tekton.dev/template: ''
+      timeout: 525600m
+    - name: artifact-printer-1
+      params:
+      - name: artifact-fetcher-1-foo
+        value: $(tasks.artifact-fetcher-1.results.foo)
+      taskSpec:
+        steps:
+        - name: main
+          command:
+          - echo
+          - $(inputs.params.artifact-fetcher-1-foo)
+          - '>'
+          - $(results.stdout.path)
+          image: alpine:3.6
+        params:
+        - name: artifact-fetcher-1-foo
+        results:
+        - name: stdout
+          type: string
+          description: /tmp/outputs/stdout/data
+        metadata:
+          labels:
+            pipelines.kubeflow.org/pipelinename: ''
+            pipelines.kubeflow.org/generation: ''
+            pipelines.kubeflow.org/cache_enabled: "true"
+          annotations:
+            pipelines.kubeflow.org/component_spec_digest: '{"name": "artifact-printer-1",
+              "outputs": [{"name": "stdout", "type": "String"}], "version": "artifact-printer-1@sha256=37dc967f8576ece2bc91e571dbaccd7f77043711a66b411d02aa952bd47191bf"}'
+            tekton.dev/template: ''
+      timeout: 525600m
+  timeout: 525600m
diff --git a/sdk/python/tests/compiler/testdata/data_passing_pipeline_complete.yaml b/sdk/python/tests/compiler/testdata/data_passing_pipeline_complete.yaml
index 29ec768b581..e022aaf0329 100644
--- a/sdk/python/tests/compiler/testdata/data_passing_pipeline_complete.yaml
+++ b/sdk/python/tests/compiler/testdata/data_passing_pipeline_complete.yaml
@@ -335,12 +335,12 @@ spec:
             fi
             ARTIFACT_SIZE=`wc -c $(workspaces.produce-string.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output${SUFFIX} | awk '{print $1}'`
             TOTAL_SIZE=$( expr $TOTAL_SIZE + $ARTIFACT_SIZE)
-            touch $(results.output.path)
+            touch $(results.Output.path)
             if [[ $TOTAL_SIZE -lt 3072 ]]; then
               if [ -d $(workspaces.produce-string.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output ]; then
-                tar -tzf $(workspaces.produce-string.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output.tar.gz > $(results.output.path)
+                tar -tzf $(workspaces.produce-string.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output.tar.gz > $(results.Output.path)
               elif ! awk "/[^[:print:]]/{f=1} END{exit !f}" $(workspaces.produce-string.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output; then
-                cp $(workspaces.produce-string.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output $(results.output.path)
+                cp $(workspaces.produce-string.path)/artifacts/$ORIG_PR_NAME/$(context.taskRun.name)/Output $(results.Output.path)
               fi
             fi
           onError: continue
@@ -350,7 +350,7 @@ spec:
               fieldRef:
                 fieldPath: metadata.labels['custom.tekton.dev/originalPipelineRun']
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         - name: taskrun-name
@@ -1377,7 +1377,7 @@ spec:
     - name: consume-anything-as-value-7
       params:
       - name: produce-string-Output
-        value: $(tasks.produce-string.results.output)
+        value: $(tasks.produce-string.results.Output)
       taskSpec:
         steps:
         - name: main
@@ -1537,7 +1537,7 @@ spec:
     - name: consume-string-as-value-5
       params:
       - name: produce-string-Output
-        value: $(tasks.produce-string.results.output)
+        value: $(tasks.produce-string.results.Output)
       taskSpec:
         steps:
         - name: main
diff --git a/sdk/python/tests/compiler/testdata/katib.yaml b/sdk/python/tests/compiler/testdata/katib.yaml
index 30e562400ce..d6570b90d01 100644
--- a/sdk/python/tests/compiler/testdata/katib.yaml
+++ b/sdk/python/tests/compiler/testdata/katib.yaml
@@ -24,7 +24,7 @@ metadata:
     tekton.dev/artifact_bucket: mlpipeline
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
-    tekton.dev/artifact_items: '{"mnist-hpo": [["bestHyperParameter", "$(results.besthyperparameter.path)"]],
+    tekton.dev/artifact_items: '{"mnist-hpo": [["bestHyperParameter", "$(results.bestHyperParameter.path)"]],
       "my-out-cop": []}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
@@ -122,7 +122,7 @@ spec:
             ''5''}}, {''name'': ''--optimizer'', ''parameterType'': ''categorical'',
             ''feasibleSpace'': {''list'': [''sgd'', ''adam'', ''ftrl'']}}]'
           - --outputFile
-          - $(results.besthyperparameter.path)
+          - $(results.bestHyperParameter.path)
           - --deleteAfterDone
           - $(inputs.params.deleteAfterDone)
           - --experimentTimeoutMinutes
@@ -137,7 +137,7 @@ spec:
         - name: namespace
         - name: parallelTrialCount
         results:
-        - name: besthyperparameter
+        - name: bestHyperParameter
           type: string
           description: /tmp/outputs/bestHyperParameter/data
         metadata:
@@ -153,7 +153,7 @@ spec:
     - name: my-out-cop
       params:
       - name: mnist-hpo-bestHyperParameter
-        value: $(tasks.mnist-hpo.results.besthyperparameter)
+        value: $(tasks.mnist-hpo.results.bestHyperParameter)
       taskSpec:
         steps:
         - name: main
diff --git a/sdk/python/tests/compiler/testdata/loop_with_params_in_json.yaml b/sdk/python/tests/compiler/testdata/loop_with_params_in_json.yaml
index 04185911f30..b6315b6b49e 100644
--- a/sdk/python/tests/compiler/testdata/loop_with_params_in_json.yaml
+++ b/sdk/python/tests/compiler/testdata/loop_with_params_in_json.yaml
@@ -26,8 +26,8 @@ metadata:
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"consume": [], "consume-2": [], "consume-3": [],
-      "consume-4": [], "consume-5": [], "produce-message": [["Output", "$(results.output.path)"]],
-      "produce-message-2": [["Output", "$(results.output.path)"]]}'
+      "consume-4": [], "consume-5": [], "produce-message": [["Output", "$(results.Output.path)"]],
+      "produce-message-2": [["Output", "$(results.Output.path)"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"inputs": [{"name": "fname1", "type":
@@ -55,7 +55,7 @@ spec:
           - --fname1
           - $(inputs.params.fname1)
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -101,7 +101,7 @@ spec:
         params:
         - name: fname1
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -126,7 +126,7 @@ spec:
           - --fname1
           - $(inputs.params.fname2)
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -172,7 +172,7 @@ spec:
         params:
         - name: fname2
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -353,8 +353,8 @@ spec:
     - name: parallelfor-pipeline-param-in-items-reso-for-loop-6
       params:
       - name: loop-item-param-5
-        value: '[{"first_name": "$(params.fname1)", "message": "$(tasks.produce-message.results.output)"},
-          {"first_name": "$(params.fname2)", "message": "$(tasks.produce-message-2.results.output)"}]'
+        value: '[{"first_name": "$(params.fname1)", "message": "$(tasks.produce-message.results.Output)"},
+          {"first_name": "$(params.fname2)", "message": "$(tasks.produce-message-2.results.Output)"}]'
       taskSpec:
         apiVersion: custom.tekton.dev/v1alpha1
         kind: PipelineLoop
diff --git a/sdk/python/tests/compiler/testdata/many_results.yaml b/sdk/python/tests/compiler/testdata/many_results.yaml
index be4683e8f5c..4597790379d 100644
--- a/sdk/python/tests/compiler/testdata/many_results.yaml
+++ b/sdk/python/tests/compiler/testdata/many_results.yaml
@@ -30,7 +30,7 @@ metadata:
     tekton.dev/artifact_endpoint: minio-service.kubeflow:9000
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"print": [], "print4results": [["param1", "/tekton/home/tep-results/param1"],
-      ["param2A", "$(results.param2a.path)"], ["param3_b", "/tekton/home/tep-results/param3-b"],
+      ["param2A", "$(results.param2A.path)"], ["param3_b", "/tekton/home/tep-results/param3-b"],
       ["param4c", "$(results.param4c.path)"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
@@ -46,7 +46,7 @@ spec:
           args:
           - '----output-paths'
           - $(results.param1.path)
-          - /tekton/home/tep-results/param2a
+          - /tekton/home/tep-results/param2A
           - $(results.param3-b.path)
           - /tekton/home/tep-results/param4c
           command:
@@ -102,7 +102,7 @@ spec:
           args:
           - |
             mv /tekton/home/tep-results/param4c $(results.param4c.path);
-            mv /tekton/home/tep-results/param2a $(results.param2a.path);
+            mv /tekton/home/tep-results/param2A $(results.param2A.path);
             mv $(results.param1.path) /tekton/home/tep-results/param1;
             mv $(results.param3-b.path) /tekton/home/tep-results/param3-b;
           command:
@@ -155,7 +155,7 @@ spec:
         - name: param1
           type: string
           description: /tmp/outputs/param1/data
-        - name: param2a
+        - name: param2A
           type: string
           description: /tmp/outputs/param2A/data
         - name: param3-b
diff --git a/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving.yaml b/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving.yaml
index 76d3b93f97f..7a450d17971 100644
--- a/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving.yaml
+++ b/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving.yaml
@@ -35,9 +35,9 @@ metadata:
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"consume": [], "consume-2": [], "consume-3": [],
       "consume-4": [], "consume-5": [], "consume-6": [], "consume-7": [], "produce-list-of-dicts":
-      [["Output", "$(results.output.path)"]], "produce-list-of-ints": [["Output",
-      "$(results.output.path)"]], "produce-list-of-strings": [["Output", "$(results.output.path)"]],
-      "produce-str": [["Output", "$(results.output.path)"]]}'
+      [["Output", "$(results.Output.path)"]], "produce-list-of-ints": [["Output",
+      "$(results.Output.path)"]], "produce-list-of-strings": [["Output", "$(results.Output.path)"]],
+      "produce-str": [["Output", "$(results.Output.path)"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"name": "parallelfor-item-argument-resolving"}'
@@ -50,7 +50,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -93,7 +93,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -113,7 +113,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -165,7 +165,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -185,7 +185,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -237,7 +237,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -257,7 +257,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -309,7 +309,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -329,11 +329,11 @@ spec:
       name: parallelfor-item-argument-resolving-for-loop-1
       params:
       - name: produce-list-of-strings-Output
-        value: $(tasks.produce-list-of-strings.results.output)
+        value: $(tasks.produce-list-of-strings.results.Output)
       - name: produce-list-of-strings-Output-loop-item
-        value: $(tasks.produce-list-of-strings.results.output)
+        value: $(tasks.produce-list-of-strings.results.Output)
       - name: produce-str-Output
-        value: $(tasks.produce-str.results.output)
+        value: $(tasks.produce-str.results.Output)
       taskSpec:
         apiVersion: custom.tekton.dev/v1alpha1
         kind: PipelineLoop
@@ -481,9 +481,9 @@ spec:
       name: parallelfor-item-argument-resolving-for-loop-2
       params:
       - name: produce-list-of-ints-Output
-        value: $(tasks.produce-list-of-ints.results.output)
+        value: $(tasks.produce-list-of-ints.results.Output)
       - name: produce-list-of-ints-Output-loop-item
-        value: $(tasks.produce-list-of-ints.results.output)
+        value: $(tasks.produce-list-of-ints.results.Output)
       taskSpec:
         apiVersion: custom.tekton.dev/v1alpha1
         kind: PipelineLoop
@@ -588,9 +588,9 @@ spec:
       name: parallelfor-item-argument-resolving-for-loop-3
       params:
       - name: produce-list-of-dicts-Output
-        value: $(tasks.produce-list-of-dicts.results.output)
+        value: $(tasks.produce-list-of-dicts.results.Output)
       - name: produce-list-of-dicts-Output-loop-item
-        value: $(tasks.produce-list-of-dicts.results.output)
+        value: $(tasks.produce-list-of-dicts.results.Output)
       taskSpec:
         apiVersion: custom.tekton.dev/v1alpha1
         kind: PipelineLoop
diff --git a/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving_noninlined.yaml b/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving_noninlined.yaml
index 3e10561b7a8..a3161f291a8 100644
--- a/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving_noninlined.yaml
+++ b/sdk/python/tests/compiler/testdata/parallelfor_item_argument_resolving_noninlined.yaml
@@ -35,9 +35,9 @@ metadata:
     tekton.dev/artifact_endpoint_scheme: http://
     tekton.dev/artifact_items: '{"consume": [], "consume-2": [], "consume-3": [],
       "consume-4": [], "consume-5": [], "consume-6": [], "consume-7": [], "produce-list-of-dicts":
-      [["Output", "$(results.output.path)"]], "produce-list-of-ints": [["Output",
-      "$(results.output.path)"]], "produce-list-of-strings": [["Output", "$(results.output.path)"]],
-      "produce-str": [["Output", "$(results.output.path)"]]}'
+      [["Output", "$(results.Output.path)"]], "produce-list-of-ints": [["Output",
+      "$(results.Output.path)"]], "produce-list-of-strings": [["Output", "$(results.Output.path)"]],
+      "produce-str": [["Output", "$(results.Output.path)"]]}'
     sidecar.istio.io/inject: "false"
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"name": "parallelfor-item-argument-resolving"}'
@@ -157,7 +157,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -200,7 +200,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -220,7 +220,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -272,7 +272,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -292,7 +292,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -344,7 +344,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -364,7 +364,7 @@ spec:
         - name: main
           args:
           - '----output-paths'
-          - $(results.output.path)
+          - $(results.Output.path)
           command:
           - sh
           - -ec
@@ -416,7 +416,7 @@ spec:
                     f.write(_output_serializers[idx](_outputs[idx]))
           image: python:3.7
         results:
-        - name: output
+        - name: Output
           type: string
           description: /tmp/outputs/Output/data
         metadata:
@@ -440,11 +440,11 @@ spec:
         name: parallelfor-item-argument-resolving-for-loop-1
       params:
       - name: produce-list-of-strings-Output
-        value: $(tasks.produce-list-of-strings.results.output)
+        value: $(tasks.produce-list-of-strings.results.Output)
       - name: produce-list-of-strings-Output-loop-item
-        value: $(tasks.produce-list-of-strings.results.output)
+        value: $(tasks.produce-list-of-strings.results.Output)
       - name: produce-str-Output
-        value: $(tasks.produce-str.results.output)
+        value: $(tasks.produce-str.results.Output)
     - runAfter:
       - produce-list-of-ints
       name: parallelfor-item-argument-resolving-for-loop-2
@@ -454,9 +454,9 @@ spec:
         name: parallelfor-item-argument-resolving-for-loop-2
       params:
       - name: produce-list-of-ints-Output
-        value: $(tasks.produce-list-of-ints.results.output)
+        value: $(tasks.produce-list-of-ints.results.Output)
       - name: produce-list-of-ints-Output-loop-item
-        value: $(tasks.produce-list-of-ints.results.output)
+        value: $(tasks.produce-list-of-ints.results.Output)
     - runAfter:
       - produce-list-of-dicts
       name: parallelfor-item-argument-resolving-for-loop-3
@@ -466,7 +466,7 @@ spec:
         name: parallelfor-item-argument-resolving-for-loop-3
       params:
       - name: produce-list-of-dicts-Output
-        value: $(tasks.produce-list-of-dicts.results.output)
+        value: $(tasks.produce-list-of-dicts.results.Output)
       - name: produce-list-of-dicts-Output-loop-item
-        value: $(tasks.produce-list-of-dicts.results.output)
+        value: $(tasks.produce-list-of-dicts.results.Output)
   timeout: 525600m