PowerBoss Gas Pressure Washer 3800 PSI 4.0 GPM Powered by HONDA GX390 Engine with Triplex Pump, 5 Nozzles, 50&rsquo; High-Pressure Hose & Detergent Injection 3800 MAX PSI / 4.0 MAX GPM Durable & fuel efficient HONDA GX390 engine delivers 390ccs of cleaning power Heavy duty Triplex Pump with adjustable pressure regulator lets you to fine tune the power washer's PSI to best fit each specific cleaning task Easily attach any of the 5 quick-connect tips (0, 15, 25, 40 soap) to the steel spray wand to tackle a variety of cleaning tasks Reach higher with your cleaning potential with a 50-foot hose that's built to endure hard work and high pressure Upgrade your power washing in seconds by simply siphoning cleaning solution into the water stream 24-months limited consumer warranty / 3-months limited commercial warranty All water pressure (PSI) & flow rate (GPM) claims were tested & verified by an independent lab, ensuring you take home the power you were promised