STIHL RB 400 DIRT BOSS Gas Pressure Washer – 2,700 psi

The STIHL RB 400 DIRT BOSS is a gas pressure washer for thorough cleaning around the house, a larger property or a small farm. A 4.8 kW (6.5 hp) engine delivers a maximum working pressure of 185 bar.

Built to last

A 1-1/4" welded steel tube frame, brass manifold and STIHL 4-point anti-vibration system protect the pump and extend its life. 10" pneumatic wheels make moving it easy.

Easy to operate

The Easy Start pump system removes back pressure for smooth starting, and a combined on/off and fuel valve closes the fuel supply automatically for mess-free transport.

Ready for the job

A 25 ft wire-braided pressure hose, 2-piece lance and gun assembly, stainless steel and brass nozzles, and onboard storage are included.

Key features

• 2,700 psi operating pressure (185 bar max.)
• 4.8 kW (6.5 hp) engine
• 1-1/4" welded steel tube frame
• Brass manifold
• 10" pneumatic wheels
• 25 ft wire-braided pressure hose
• 4-point anti-vibration system
• Automatic fuel shut-off valve
• Easy Start pump system with pressure relief valve
• Stainless steel high-pressure nozzles and brass detergent nozzle
• 2-piece lance and gun assembly with extended lance
• Easy-access inlet and outlet water connections
• Draws cleaning agent from external containers
• Lance holder and parking position
• Folding handle for storage and transport

Frequently asked questions

Is it hard to start?

No. The Easy Start pump system uses a pressure relief valve so the engine starts without back pressure from the pump, with no hard cord pulls.

What hose comes with it?

A 25 ft wire-braided pressure hose.