The Prothane front frame shackle bushings for 1971–1991 GM applications are replacement shackle bushings intended to support the front frame shackle and maintain correct spring positioning on older GM trucks and vans. Supplied in red for easy selection, they read as service components for restoring suspension fit and function. These bushings are tailored as direct-fit replacements for 1971–1991 GM front frame shackles.
Prothane 71-91 GM Front Frame Shackle Bushings - Red