7105410 Unloader Replacement Kit with Stainless Steel Seat – Fits EW4040 4200 PSI Pump. Keep your pressure washer running at peak performance with the 7105410 Unloader Service Kit—engineered specifically for FNA Group EW4040 series pumps rated at 4200 PSI. Ideal for restoring optimal pressure regulation, this kit ensures smooth and efficient operation in high-performance machines. A reliable solution for maintaining your equipment's longevity and functionality.
Kit Includes:
- Replacement stainless steel seat with pre-installed O-ring
- Small set screw
- Precision-fit components for easy installation and long-term reliability
Specifications:
- Length: 3 inches
- Diameter: ~1/2 inch
- Application: Unloader valve replacement for EW4040 pressure washer pumps
NOTE: Please be careful when emptying the bag, as the locking nut measures less than 1/16 of an inch across and can be easily lost.

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