***see 2nd picture for missing/damaged section TOOLCY Pressure Washer Pump 3600-4400 PSI Max 4.4 GPM, 1 inch Shaft Horizontal Triplex Plunger Power Washer Pump Replacement, Direct Drive Pressure Pump with Unloader, 5 Nozzle Tips, M22-14mm Adapter About this item [PROLONG THE LIFE OF YOUR PRESSURE WASHER] Premium quality triplex plunger pressure washer pump replacement is designed for gas power washers with horizontal 1 inch shaft engines 10-15HP or 270-420cc, easy to install. Compatible with Honda GX340 GX390, DeWalt, Simpson, AR and more [ADJUSTABLE PRESSURE] There is a RED knob to allow you to conveniently decrease or increase the power for different tasks, max up to 4400 PSI and 4.4 GPM (recommend working pressure at 3400 PSI 3400 RPM for longer life). Meet your residential and light commercial pressure washing demands for driveway, decks, fences, sidewalks, vehicles, and so on [OEM QUALITY POWER WASHER PUMP] Fully anodized black crankcase with solid brass pump head and 3/8 inch stainless steel quick connect outlet can greatly improve the strength and extend the service life of pressure washer pump. The triplex plunger design makes the pump run more smoothly, powerful and durable. Advanced sight glass and oil seal technology eliminates the need for a dipstick. [SPECIFICATION] 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 stainless steel quick connect high pressure hose output. Come with 5 pcs pressure washer nozzles and 3/8" QC plug to M22-14mm male adapter. [COMPATIBILITY]: Compatible with Honda: GX340, GX390, GX270?Simpson:Simpson Armor 41114, 41096, 41115 or Simpson Monster 41113, 41028, 41030, 41032, 41034; AAA: 90039, 90038, 90034, DW3635; AR: RKV3G27, RKV3G34, RKV4G36, RSV4G40, RKV3G39, RRV4G40HD, RG 2125HN, RG 1528HN, SLPHP4040-402; CAT: 66DX40GG1, 66DX35G1I; OTHERS: 3-0308, 3-0350, EXHP3640, EZ4040G, EZ4040, TS2021, WS202, DXPW3035, DXPW3535, DXPW4035 and more. [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