2006 Dana 21060S, Truck Tractor, Axle Housings (Rear), Fits to: International 4300, (Used) 2006 International 4300, COMPLETE DIFFERENTIAL HOUSING ONLY- Part Number: 510916, Serial Number: HN02042667, Make: Spicer, Model: 21060S, Ratio: 5.57, Capacity: 20,000 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, Serial# HN02042667, Casting# HN02042667, Hub Bolts 10 1HSMMAANX6H322068