COMPATIBILITY INFORMATION: This product is only compatible with pressure washers featuring a 7/8" shaft and a REAR INLET pump. It has a maximum pressure of 3100 PSI, a flow rate of 2.5 GPM, and operates at 3400 RPM. Compatible with brands including Honda, Briggs and Stratton, Subaru, PowerStroke, Craftsman, Simpson, and Homelite. Designed to replace pumps on most rear outlet engines of 180-196cc (6.5-7hp) EXTENDED SERVICE TIME: High-performance double seal system prevents leakage, upgraded technical surfacing piston and bearing, We promise the pump get 150 hrs running time, longer than OEM power washer pump. And the thermal relief valve (TRV) protects the pump from overheating while in by pass mode. But will not fit 3/4" shaft engine pressure washer EASY INSTALLATION: Built-in for simple and quick cold starts to make the startup a breeze. no need to release pressure before starting engine. Easy set up in 5-10 minutes with Key. At the same time, we come with 3 special test matched nozzles (0 degree/25 degree/soap) to help you get the best cleaning solution. Please follow the instructions to help your machine renew working quickly NO MAINTENANCE REQUIRED: Our pressure washer pump already have pre-filled oil and double seal system, set it up directly and prevents oil/water leaks. This pump features a maintenance-free crankcase so you never have to pre-fill gear oil and no need to change oil. The improved 2.5GPM, 3100PSI performance allows you to clean rooftops, sidewalks, cars, gardens, pools and more WIDE MODEL COMPATIBILITY: Compatible with a wide range of models, including common ones from Briggs & Stratton: 311553GS, 020441-0, 020442-0; Craftsman: 580752191, 580752052, 580752500, 580752580; Honda: GCV160, GCV190; Homelite: UT80432A, UT80432, 308653006, 308653093; Simpson: msv3024, ms60773; Subaru: ea190v; Husky: HU80911, HU80709A, HU80911A; Other: RY802800, RY802900, RY803001, RY802700A;