MAT - EDI

155 PSI Outlet port on the right

To test this part. Run unit, turn off power, remove pressure line from pump. If air leaks from tank, then replace this. If your pressure switch is leaking out of the small bleeder valve on the side...

Complete overhaul kit for the 3-piston 040-0348 Unoair air compressor pump. Includes all valve plates with valves, piston rings, gaskets, crank bearings, oil seal, and air filter elements necessary...