3 0 1975 GMC T150 Rear Differential for a GMC 6000 $500 USD (USED) GM T150 Ratio: 6.17 Side Gear Splines: 29 W/ Locker: NO Cast#: - 6.17 RATIO ConditionUsedFits To Make(s)GMCFits To Model(s)6000Stock Number25684106 MLS Number13044939CategoryDifferentials, Rear Last Updated8/30/2025 LocationDes Moines, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info