View 1 Photo View 0 Videos Eaton DS380 Rear Differential for a 1981 GMC ASTRO Newly Listed $850 USD RS380 RR 370 INSPECTED IN OUR GEAR SHOP 90 DAY WARRANTY, Ratio: 370 ConditionUsedRear End3.70 ratioFits To Make(s)GMCFits To Model(s)ASTROWill Fit Year(s)1981Stock Number90526-3 MLS Number14603708CategoryDifferentials, Rear Last Updated9/15/2026 LocationUcon, ID, US Sold ByHolst Truck Parts (833) 541-___ SHOWNUMBERCall Seller Email Seller Save More Info