1997 Meritor/Rockwell RS15-120, Truck Delivery, Rear Rears (Tandem Rear or Single), Fits to: Ford F700, (Used) 1997 Ford F700, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: RS15120NFNN15557, Serial Number: NKA96025037, Make: Meritor, Model: RS15-120, Ratio: 5.57, Capacity: 15,000 Lbs, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Ratio 5.57, Serial# NKA96025037, Casting# NKA96025037 1FDNF70J3VVA03146