OER Parts offers a wide selection of Rear End Components for your 1984 GMC K3500. OER Parts offers 1984 GMC K3500 Axle Shafts & Parts, 1984 GMC K3500 Differential, 1984 GMC K3500 Differential Covers, 1984 GMC K3500 Differential Hardware, 1984 GMC K3500 Differential Tools, 1984 GMC K3500 Driveshaft, 1984 GMC K3500 Driveshaft Safety Loops, 1984 GMC K3500 Gaskets & Seals, 1984 GMC K3500 Performance Rear Ends, 1984 GMC K3500 Ring & Pinion Gears, and 1984 GMC K3500 U-Joints and Parts.