[Fits Most Gas Power Washers] Triplex plunger pressure washer pump is designed for gas power washers with horizontal 1-inch shaft 10-15HP (or 270-420cc) engines. Compatible with Simpson 40224, 40225, 40226, DeWalt DXPW3035, DXPW3535, DXPW4035, AR Annovi Reverberi RKV3G27, RKV3G34, RKV4G36, RKV3G39 and more. Save money by replacing your pump instead of buying a whole new power washer

[Adjustable Pressure for Various Cleaning Tasks] Equipped with an adjustable unloader, could adjust your pressure output to suit various cleaning tasks, thus increasing cleaning efficiency and protecting surfaces. Max up to 4000 PSI and 4.4 GPM. Meet your residential and commercial pressure washing demands for driveways, decks, fences, sidewalks, vehicles, and so on

[Easy Oil Level Inspection] The sight glass and advanced oil seal technology eliminate the need for a dipstick, you can easily know if oil levels are low or if water has clouded the oil through the sight glass, and easy to change the oil in time. Tips The oil should be changed about every 60 hours of operation for optimal performance

[Easy to Renew Power Washer] Pump flange complies with industry SAE standard mounting dimension, 1 inch shaft hole. With standard 3/4 inch garden hose inlet and 3/8 inch quick connect high pressure hose output. Each kit includes 1x pump, 4x flange bolts, 1x shaft key, 1 bag o-rings, 1x air breath valve, 5x spray nozzles. Upgrade your pressure washer effortlessly with our all-inclusive replacement pump kit

[For Long-term Safe Use] This pump features a fully blackened crankcase, robust brass pump head and triplex plunger construction, improving sealing effectiveness, strength, longevity and durability. Also, our power washer pump features a built-in thermal relief valve. This important safety feature prevents overheating, ensuring the longevity of the pump's internal components

[Compatibility Check] To ensure proper compatibility, please verify that the engine orientation, PSI rating, GPM, engine shaft diameter, and the current pump's inlet and outlet connections match accordingly