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Looking for aftermarket parts to modify or upgrade your 1989 GMC R3500 with diff covers? At Tunersports.com we carry a huge selection of the top name brand performance diff cover parts and accessories.
 IN STOCK YHCC-GM14T-SYukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme hits in off road driving. They also increase the structural rigidity of the differential, reducing deflection under high-torque situations that can put ... Yukon Gear Hardcore Diff Cover for 14 Bolt GM Rear w/ 3/8in. Cover Bolts 1987-1989 GMC R3500 High Sierra / Sierra Classic 1987-1991 GMC R3500 Base $308.89 |