Dodge Ram 1500 Driveshaft Center Support Bearing HB-88530

This is an HB-88530 driveshaft center support bearing, the rubber-isolated carrier bearing that holds up the middle of a two-piece driveshaft. It is listed for 1994-2006 Dodge Ram 1500, 2500 and 3500 trucks with a two-piece shaft, plus Chevrolet S10, Blazer and Trailblazer and GMC Sonoma, Jimmy and Envoy models from the same era. It replaces N217042, 12475525 and 5014097AA.

Why it gets replaced: the rubber cushion around the bearing cracks and tears with age, and the bearing itself dries out. A worn center support lets the shaft move off its centerline, which you feel as a shudder when pulling away from a stop, a vibration that comes and goes with load, or a clunk when shifting into drive. A bad bearing also makes a whine or growl that rises with road speed. It is often misdiagnosed as a transmission or rear axle problem.

On the bench: mark the front and rear shaft sections and the pinion yoke so everything goes back in phase. Unbolt the rear shaft at the axle, remove the center support bolts from the crossmember, and slide the front shaft out of the transmission. Separate the two halves at the slip joint or U-joint, press the old bearing off the front shaft, and press the new one on square against its shoulder. Reinstall with the phasing marks lined up and torque the bracket bolts. Confirm fitment against your old part number or original bearing before ordering.