View 2 Photos View 0 Videos 1991 Eaton RS341 Rear Differential for a GMC Topkick $756 USD (USED) Eaton RS341 Ratio: 7.17 Side Gear Splines: 39 W/ Locker: NO Cast#: 127045 ConditionUsedFits To Make(s)GMCFits To Model(s)TOPKICKStock Number25699874 MLS Number13215016CategoryDifferentials, Rear Last Updated3/19/2025 LocationWinimac, IN, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info