View 4 Photos View 0 Videos 2000 Isuzu Rear Differential for a GMC T5500 Recently Updated $908 USD (USED) Isuzu OTHER Ratio: 3.55 Side Gear Splines: 25 W/ Locker: NO Cast#: D-985Y ConditionUsedFits To Make(s)GMCFits To Model(s)T5500Stock Number25037390 MLS Number10964887CategoryDifferentials, Rear Last Updated1/17/2026 LocationSpencer, IA, US Sold ByVander Haag's Inc. (855) 370-___ SHOWNUMBERCall Seller Email Seller Save More Info