(Used) 2000 Ford F-750, DIFFERENTIAL HOUSING ONLY- Make: Meritor, Model: RS21-145, Ratio: 4.88, Capacity: 21,000 Lbs, Part Number: TBD, Serial Number: TBD, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921