In this black 5/8 inch rear sway bar bushing kit from Prothane, polyurethane based suspension, driveline and chassis components have been designed as an upgrade to the soft factory rubber components. Precision fabrication ensures a perfect fit. Holds super grease for quiet operation and provides necessary rigidity.. This set of black polyurethane 5/8 inch rear sway bar bushings from Prothane fit 93-98 Jeep Grand Cherokee ZJ.