View 4 Photos View 0 Videos 1995 Eaton RSP40 Rear Differential for a GMC Topkick Recently Updated $984 USD (USED) Eaton 19050S Ratio: 3.36 Side Gear Splines: 36 W/ Locker: NO Cast#: 210398 ConditionUsedFits To Make(s)GMCFits To Model(s)TOPKICKStock Number25367779 MLS Number11836234CategoryDifferentials, Rear Last Updated3/5/2026 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info