Master Tool Repair

Old Part Numbers: ST072321AV, 058-00123/4" compression nut & sleeve (2 required). For air compressor units made before 05/20/1994.

Kit includes Connecting Rod/Piston, Piston Ring, Screw, Piston Cover and Cylinder. Everything needed to restore compression! Click here on how to install this type of kit properly. Extra...

Everything necessary to perform a valvejob (for both pump heads). No unloaders. Also includes gaskets. Includes: 610-1032 - Discharge Valve Assy 610-1031 - Intake Valve Assy 104-1007 - Valve Plate...

B5900/B5000 Valve Plate Assembly. Item comes in 2 separate packages. B5000 and B5900 pump now use the same valve plate. Poor performance or air leaks out of the intake filter while the unit is...

This E100435 air compressor air filter kit includes an air filter element, crankcase oil breather cap, and oil sight glass.

Kit includes Connecting Rod/Piston, Piston Ring, Screw, Piston Cover and Cylinder. This kit will restore compression, but order Gaskets separately if needed!

1/2" transfer tube and 1/2" compression nuts & sleeves for air compressors. Note: Item may be aluminum or copper.

MADE TO ORDER. This kit allows you to remove the aftercooler that comes with the new B5900 pump and install this adapter kit. Simply remove the aftercooler, clean off the gasket material,...