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The Prothane rear frame shackle bushings with 1 3/8-inch outer diameter for 1981–1987 GM vehicles are direct replacement components that help maintain correct spring alignment and rear suspension fit. Supplied in black for a discreet finish, they act as service parts for restoring or refreshing rear shackle mounts. They are matched to 1981–1987 GM rear shackle applications needing a 1 3/8-inch OD bushing.
Prothane 81-87 GM Rear 1 3/8in OD Frame Shackle Bushings - Black
