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The Prothane rear sway bar bushing for 1981–1991 GM dually trucks is a 1 1/16-inch black replacement bushing engineered to fit the factory sway bar diameter. It controls lateral movement of the sway bar, helping restore proper alignment and reduce noise from worn rubber mounts. Intended as a direct-fit maintenance part for restoring handling feel and mounting integrity.
Prothane 81-91 GM Dually Rear Sway Bar Bushings - 1 1/16in - Black
