diff --git a/kstreams/test_utils/test_utils.py b/kstreams/test_utils/test_utils.py
index f5fde440..9059514c 100644
--- a/kstreams/test_utils/test_utils.py
+++ b/kstreams/test_utils/test_utils.py
@@ -1,7 +1,7 @@
 from types import TracebackType
 from typing import Any, Dict, List, Optional, Type
 
-from kstreams import ConsumerRecord
+from kstreams import Consumer, ConsumerRecord, Producer
 from kstreams.engine import StreamEngine
 from kstreams.prometheus.monitor import PrometheusMonitor
 from kstreams.serializers import Serializer
@@ -44,8 +44,12 @@ def __init__(
         stream_engine: StreamEngine,
         monitoring_enabled: bool = True,
         topics: Optional[List[str]] = None,
+        test_producer_class: Type[Producer] = TestProducer,
+        test_consumer_class: Type[Consumer] = TestConsumer,
     ) -> None:
         self.stream_engine = stream_engine
+        self.test_producer_class = test_producer_class
+        self.test_consumer_class = test_consumer_class
 
         # Extra topics' names defined by the end user which must be created
         # before the cycle test starts
@@ -53,11 +57,11 @@ def __init__(
 
         # store the user clients to restore them later
         self.monitor = stream_engine.monitor
-        self.producer_class = self.stream_engine.producer_class
-        self.consumer_class = self.stream_engine.consumer_class
+        self.engine_producer_class = self.stream_engine.producer_class
+        self.engine_consumer_class = self.stream_engine.consumer_class
 
-        self.stream_engine.producer_class = TestProducer
-        self.stream_engine.consumer_class = TestConsumer
+        self.stream_engine.producer_class = self.test_producer_class
+        self.stream_engine.consumer_class = self.test_consumer_class
 
         if not monitoring_enabled:
             self.stream_engine.monitor = TestMonitor()
@@ -65,7 +69,7 @@ def __init__(
     def mock_streams(self) -> None:
         streams: List[Stream] = self.stream_engine._streams
         for stream in streams:
-            stream.consumer_class = TestConsumer
+            stream.consumer_class = self.test_consumer_class
 
     def setup_mocks(self) -> None:
         self.mock_streams()
@@ -87,8 +91,8 @@ async def stop(self) -> None:
         await self.stream_engine.stop()
 
         # restore original config
-        self.stream_engine.producer_class = self.producer_class
-        self.stream_engine.consumer_class = self.consumer_class
+        self.stream_engine.producer_class = self.engine_producer_class
+        self.stream_engine.consumer_class = self.engine_consumer_class
         self.stream_engine.monitor = self.monitor
 
         # clean the topics after finishing the test to make sure that
diff --git a/tests/test_client.py b/tests/test_client.py
index e49c3363..c33f3d1f 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -29,8 +29,8 @@ async def test_engine_clients(stream_engine: StreamEngine):
         assert stream_engine.producer_class is TestProducer
 
     # after leaving the context, everything should go to normal
-    assert client.stream_engine.consumer_class is client.consumer_class
-    assert client.stream_engine.producer_class is client.producer_class
+    assert client.stream_engine.consumer_class is client.engine_consumer_class
+    assert client.stream_engine.producer_class is client.engine_producer_class
 
 
 @pytest.mark.asyncio