B5000 / B5900 Air Compressor Pump Ring Kit, High-Pressure (HP) #04A625

Includes all four (4) rings for the smaller, high-pressure (HP) piston (hone the cylinders before installation). For the B5000 and B5900 model air compressor pumps.

If you have a sudden loss of performance or if the pump is using too much oil, replacing the piston rings usually repairs the problem.

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