Old Part Numbers: SSF-3158-1This is the screw that holds down the piston cover, on the top of the piston.

Old Part Numbers: KK-4835, CAC-118, 889124, 889125, 891125, AC-0788, CAC-1118, D25009, D25837, CAC1118, CAC118, CAC-249, CAC-249-1, A02743, K-0651, KK-5081, 889124 889125 891125 AC-0788 CAC-1118 D25009 D25837 CAC1118 CAC118 CAC-249 CAC-249-1, D35076,...

Order this if ordering valve plate or a new head.

Plastic fan to cool pump and motor. 6"Diameter  Length-  5"          Width - 5"          Height-1.850"       

Note: recommend ordering kit K-0650. This kit includes a comp ring, seal and a new cylinder sleeve which should be replaced over time if scratched or damaged. Replacing the comp ring only may not fix the unit.Specifications1.89 ID X 2.54 OD

Old Part Numbers: Z-AC-0032, AC-0032Valve plate comes with preinstalled valves and o-rings. Poor performance or air leaks out of the intake filter while the unit is running? This is probably the problem.