Xastro AR42118 Unloader Valve Rebuild Kit
Updated September 3, 2026
This auction ended on September 7, 2026.
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| Lot number | 5610 |
| Auction | Labor Day Special: Home Goods, Tons Of Bedding & More! SHIPS |
| Date | September 7, 2026 at 10:59 AM CDT |
| Auction house | Garnet Gazelle |
| Location | Houston, Texas |
This unloader valve rebuild kit is designed for pressure washer pumps and fits multiple RMV RMW and SRMW series models. It replaces OE AR42118 and equivalent part numbers to restore automatic unloading so system pressure drops to zero when unloaded and pressure oil returns to the fuel tank reducing power draw and extending pump life. Constructed from corrosion resistant materials with high temperature and wear resistance this kit meets or exceeds OEM performance standards and provides reliable long term operation. Keywords: retrofit, workshop, plumbing, gaskets, tools
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