OTC 7639 GM W-Body Brake Bushing Service Set.
This is the approved method of servicing seized four wheel disc brake rear caliper slides on GM W-body cars. The bushing driver (#49012) attaches to your air hammer to remove the frozen slide; the hone (#219387) cleans out the inside of the caliper slide bore; and the wire brush (#219386) cleans out the caliper's seal groove.
For use on 1988-current Pontiac Grand Prix, Oldsmobile Cutlass Supreme, Buick Regal and 1990-current Chevrolet Lumina.
Similar to Kent-Moore J-39495.
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