Gasket in between the cylinder and the air compressor pump valve plate. If the air compressor pump doesn't seem to pressurize as quickly as it should or is leaking in between the head, valve plate, cylinder, or crankcase while running, there's a good...

Piston/connecting rod for the OL197 air compressor pump (H1504ST). Bare piston rod only, does not include the compression ring.

Screw, Tcei, M5 x 16.

Screw for the handle insert.

Air compressor ball valve drain cock, 3/8" NPT METRIC. Prevent rust from ruining your tank by draining your tank daily. Keep an extra around for a spare.

Head gasket (above the valve plate) for air compressor pumps. If the compressor pump doesn't seem to pressurize as quickly as it should or is leaking in between the head, valve plate, cylinder, or crankcase while running, there's a good chance you need...

Old Part Numbers: AB-917009162032Z type bearing.