View 0 Photos View 0 Videos 1993 Eaton 19055T Rear Differential for a GMC Topkick $1,000 USD (USED) Eaton 19055T Ratio: 4.88 Side Gear Splines: 39 W/ Locker: NO Cast#: A107494 ConditionUsedFits To Make(s)GMCFits To Model(s)TOPKICKStock Number25860624 MLS Number13799543CategoryDifferentials, Rear Last Updated11/7/2025 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info