The Skyjacker rear block and U-bolt kit for 1979–1985 GMC K3500 pickups offers a classic rear lift solution and helps correct pinion angle to limit driveline vibration. The ductile iron block includes a fixed center pin and tapered profile; U-bolts are e-coated to resist corrosion. Intended for rear-lift applications, the kit includes hardware and comes with a limited lifetime warranty.
Skyjacker 79-85 GMC K3500 Pickup Standard Side Bed Extended Cab Suspension Block and U-Bolt Kit