Part Name: Water Pump Assembly. Engine Model: 6CT8.3L. Fitment Type: Direct Replacement. For Cummins 6CT8.3L 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. UPS Surepost usually takes 1-6 workdays. UPS Ground usually takes 1-5 workdays. If you don’t receive package over 30 business workdays, please inform us. Duty for International Buyers. We will do our best to offer you satisfied resolutions.