Spring for air regulator. This is the spring that installs directly into the plastic regulator knob, on top of the diaphragm.

Old Part Numbers: 5140121-073/8" compression inlet x 1/2" male NPT outlet check valve with 1/8" hole and plug. If the small unloader (bleeder) valve on or under your pressure switch leaks constantly AFTER the unit shuts off, replace this part. The check...

Pin for Regulator Knob.

Air compressor o-ring gasket that installs in between the cylinder cup and the valve plate. NOTE: This gasket does not go on the piston.

Head o-ring gasket for air compressors.

Rubber grommet for air compressor pump/motor assembly. Keeps your motor stable and reduces vibration.

Old Part Numbers: GA0125200, PG0125200BKAir Compressor Pressure Gauge, 1/8" MPT, Back-Mount, 200 PSI, 1.5" Face. Replace if misreading or broken.Specifications PSI: 0-200 PSI MPT: 1/8" MPT Dial / Face: 1.5" Back-Mount

Old Part Numbers: S145-0543, 145-0456Stainless steel braided tube that runs from pump to tank. Replace if leaking.  Specifications5.5" long with 3/8" compression fittings on each end