(Used) 1990 International 4600, COMPLETE REAR DIFFERENTIAL- Make: Spicer, Model: F155S, Ratio: 4.78, Capacity: 12,280 lbs, Hub Bolts: 6, Brake Type: Disc, Part Number: 68943-R4, Serial Number:89011014, For more information about this item, give us a call.We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921