Stihl 49505100304 Control Piston RE130 Plus RE140 Plus Pressure Washer

Genuine Stihl 4950 510 0304 / 49505100304 control piston for compatible Stihl RE pressure washers. The control piston forms part of the pump and valve block assembly and works within the pressure-control system to regulate operation of the high-pressure pump. Suitable for replacing a worn, sticking, damaged or defective original control piston and manufactured to Stihl specifications for the correct fit and reliable operation. Stihl parts documentation identifies 4950 510 0304 specifically as the control piston within the pump and valve block and specifies it for 220–240V, 50Hz machines.