The original one on pump is sealed in case of oil leakage in transit. When installing, please ensure that the keyway is installed before running your pressure washer.
Allow water to flow freely through the pump until all air is out of the lines before firing the pressure washer up! 6.35 mm keyway, 3/4-inch standard garden hose inlet, 3/8-inch(19mm) quick-connect outlet, 50°C (122°F) max. Replacement pump kit with near-universal compatibility for standard 1-inch shaft direct-drive gas engines from Honda, Annovi Reverberi, RIDGID, Blackmax, Generac, Husky, Excell, Troy-Bilt, Sears, Briggs & Stratton, Campbell Hausfeld and more. Forged brass and anodized aluminum construction with cooling fins; Durable 18 mm ceramic-coated solid stainless steel plungers; German-made packing seals. Detachable and pressure-adjustable internal bypass unloader valve with detergent injector and built-in water filter; Triplex plunger pump mechanism; Thermal relief protection to prevent pump overheating; Sight glass for oil inspection.
Easy Installation: This replacement pump features a garden hose inlet and QC quick connect high pressure hose outlet. The SAE standard bolt pattern that fits most gas-powered pressure washers. Each kit includes a detergent tube with filter, mounting bolts, shaft key, to get your machine back in action as quickly as possible. (Check your pressure washer's inlet and outlet orientation, mounting dimension to ensure compatibility).
Match gas engine power: 9-13 HP(Standard 10 HP). Flow rate: 15-18LPM/3.96-4.8GPM. Power: 7.5KW(Require at least 5.5KW gas engine). Hollow shaft: 1(25.4mm). Pump plunger bore: 18 mm.
Package included: 1 x replacement Pump, 1 x pressure guage, 4 x flange bolts, 2 x keyway, 1 x detergent tube. (No service on Weekend and public holidays). All return products should be in brand new state with all accessories included.