Description
Overview:
This Control Piston is a genuine Stihl OEM component designed for the pressure regulation system in Stihl electric pressure washers. It replaces worn or damaged pistons to restore consistent operating pressure and reliable shut-off/trigger response, helping prevent pressure loss and pulsing during use. Built from durable metal with precision sealing surfaces, it is engineered for the demands of regular cleaning tasks. Specifically matched to Stihl RE98 and RE88 models, the piston fits the pump's control/unloader assembly without modification, ensuring an accurate, leak-free fit. Supplied under Stihl part number 4775 510 0300, it is suitable for both professional maintenance and routine DIY servicing where dependable performance and long service life are required.
Key Features:
- Genuine Stihl OEM part for assured compatibility and performance
- Precisely matched to the RE 88 and RE 98 pressure washer pump control assembly
- Restores correct pressure regulation to fix issues such as weak pressure or surging
- Robust metal construction with quality sealing interfaces for longevity
- Corrosion-resistant design suitable for regular wet operation
- Helps protect pump components by maintaining stable operating pressure
- Straightforward replacement with standard hand tools and basic workshop practice
- Supplied to Stihl specification for reliable fit and function
Typical Applications:
Used to service the control/unloader section of the pump on Stihl RE series washers when experiencing pressure fluctuations, delayed pressure build-up, or leaks from the regulator area. Ideal for routine maintenance in home, trade, or site environments where consistent high-pressure cleaning is required for patios, driveways, vehicles, tools, and building surfaces.
Also known as:
Pressure control piston, unloader valve piston, pump control plunger, regulator piston, washer control piston, pressure washer control component.
Fits Models:
RE 88, RE 98
Alternate Part Numbers:
4775-510-0300, 47755100300
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