Old Part Numbers: K31Gasket in between the crankcase and the cylinder. 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...

Old Part Numbers: RCB-M-HU-125Air compressor pilot unloader valve. Cuts-in at 95 PSI and cuts-out at 125 PSI. Has a hand toggle unloader for easy starting. 1/4" MPT x 1/8" FPT for throttle control. Factory preset, yet can be adjusted for higher or lower...

Old Part Numbers: 621423-00, 5130156-01

Old Part Numbers: 5130228-00, 5131683-00