OER Parts offers a wide selection of Rear End Components for your 1981 GMC Jimmy. OER Parts offers 1981 GMC Jimmy Axle Shafts & Parts, 1981 GMC Jimmy Differential, 1981 GMC Jimmy Differential Covers, 1981 GMC Jimmy Differential Hardware, 1981 GMC Jimmy Differential Tools, 1981 GMC Jimmy Driveshaft, 1981 GMC Jimmy Driveshaft Safety Loops, 1981 GMC Jimmy Gaskets & Seals, 1981 GMC Jimmy Performance Rear Ends, 1981 GMC Jimmy Ring & Pinion Gears, and 1981 GMC Jimmy U-Joints and Parts.