Part Name: Water Pump Assembly. Part Number: 3647029 4372338 4376119. Engine Model: KTA38 K38. Fitment Type: Direct Replacement. Applicable Models: For Cummins KTA38 K38 Diesel Engine Parts. Please confirm according to the correct part number and not just the model number. Please leave your physical address (home or office address) but do not leave your P. Box address and ensure that your address and contact information are correct. Please make sure it will fit your machine before purchasing it. If you are not sure this is what you need please find out your engine model series number and contact our Customer-service.