Old Part Numbers: CAC-437Check Valve, 1/2" compression x 1/2" male NPT. The check valve is a one-way valve that prevents air from backfeeding from the air tank. If the small unloader (bleeder) valve on or under your switch leaks constantly AFTER the unit...

Old Part Numbers: SUDL-65

Plastic plug for the piston pin (two used per piston).

Washer for the flywheel bolt.

Pin for the piston. One used per piston.

Old Part Numbers: 265-16 265-16-1 replaces 265-16

Vent filter for the pump crankcase. This fits into the top of the cylinder.