When you need a power washer that delivers top performance and can stand up to daily use, choose the STIHL RB 400 DIRT BOSS. It features a powerful 196 cc (6.5 hp) engine that outputs 2,700 psi of water pressure at 2.7 gallons per minute, with a brass manifold pump design, stainless steel valves, ceramic-coated pistons, and a cast-iron engine liner. It also features an easy start pump system, a detergent injector system, and a 25 ft no-kink flex hose.