Order this if ordering valve plate or a new head.

Old Part Numbers: A19715, CAC-4337-1, D288261/2" male NPT x 1/2" compression check valve, with 1/4" compression adapter. For model D55167 type 1 and others. If the small unloader (bleeder) valve on or under your switch leaks constantly AFTER the...

Isolator for the pump/motor assembly. Keep your pump running smoothly and replace if damaged or missing!

Cylinder sleeve for pump. For model D55127 type 1 & 2 and others. Usually replaced with the piston compression ring.

Screw (fastener) for the motor/pump shroud.