When you go off road, sometimes the road comes along for the ride. Clean your truck with the power of STIHL and the RB 400 Dirt BossĀ® pressure washer. This commercial-grade washer features an Easy Start Pump System, a 6.5 horsepower engine and 2,700 psi of water pressure. And with a 25-foot hose, you can walk all the way around your truck and blast dirt from any angle