MAT - EDI

Old Part Numbers: 165-0304Overhaul kit for the HB55 in-line 2-stage air compressor pump, includes valve plate assembly with valves, gasket set, piston ring set, conrod insert bearings, oil seal, and...

Head Gasket only. We always recommend replacing all head gaskets at the same time, as the other gaskets can be compromised once the head is removed. Note: We recommend you replace the Cylinder Gasket...

  (A.O. Smith) Unit bogging down? Replace this if no continuity.If needle drops to zero and slowly rises, it is probably good.  

Replacement Pressure Switch, 145/175 psi, 4-Port (1/4" NPT) without Tabs. If your pressure switch is leaking out of the small bleeder valve underneath the switch after the unit shuts off, order...