Item Type: Flywheel Housing. Part Number: 3971926 3975178 4934902 4944346 4944349 4947472 4947579 4982759. Engine model: 6BT 5.9L. Fitment Type: Direct Replacement. For Cummins 6BT 5.9L Diesel Engine. Please leave us physical address (home or office address) but not P. In Order To Avoid Unnecessary Returnplease Check The Product Picture And Part Number Carefully To Make Sure It Is The Product You Want. 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.