Description
Overview:
The Piston for Interpump WS201 Pumps (OEM 47.0404.09) is a replacement plunger designed to restore and maintain the performance of Interpump WS201 high‐pressure pumps used on construction and garden equipment. Built from hard‐wearing materials for long service life, it forms the moving seal surface that pressurises water inside the pump head. A precise fit to OEM specification helps maintain correct clearances, smooth operation, and consistent pressure. Suitable for owners and service teams working on WS201 units, this genuine‐spec component helps reduce downtime and keep washers and pump‐driven systems running efficiently in demanding environments.
Key Features:
- Genuine Interpump OEM specification for reliable fit and performance
- Durable, wear‐resistant construction for long service life under heavy use
- Smooth plunger surface helps maintain seal integrity and operating pressure
- Precision‐made to match WS201 tolerances and pump geometry
- Helps restore pressure output when the original piston is worn or scored
- Corrosion‐resistant materials suitable for regular wash‐down and outdoor use
- Easy to install with standard workshop tools, minimising downtime
- Stable performance reduces vibration, heat build‐up, and premature seal wear
Typical Applications:
Used in WS201 pumps fitted to pressure washers, plant wash‐down systems, site cleaning rigs, and agricultural or garden maintenance equipment. Ideal for routine servicing or repairs where pressure has dropped, pulsation has increased, or the plunger surface shows wear, chips, or scoring.
Also known as:
Pump piston, plunger, WS201 piston, WS201 plunger, high‐pressure pump plunger, OEM piston 47.0404.09, replacement piston for Interpump WS series.
Fits Models:
WS201
Alternate Part Numbers:
47.0404.09, 47040409
Product Specifications
| L&S Part No. | 47.0404.09 |
|---|---|
| Unit of Sale | 1 |
| Applications | WS201 |
| Machine Type | Pumps |
| Fits Brands | Interpump |
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