Horizontal Brass 3100-PSI Maximum Pressure Washer Pump Replacement Axial Cam OEM. Corrosion resistant brass head pump. Upgrade the pump in your current unit or renew a broken pressure washer with a pressure washer replacement pump. Brass head is corrosion resistant brass to keep the unit lasting longer. Fits most gas pressure washers from 2500-PSI to 3100-PSI with RYOBI, Honda, Briggs and Stratton, Subaru, PowerStroke and Homelite Engines (not compatible with Idle down configured pumps). M22 high pressure hose connection.