Life tested over 500 hours at maximum performance. 4 GPM at 4,000 PSI.4000 PSI / 4.0 Max GPM. Chemical Injector & Thermal Relief Valve Included. EZ - Easy Start Valve. The item "4000 psi AR POWER PRESSURE WASHER Water PUMP replaces RRV4G40D-F24 1 Shaft" is in sale since Wednesday, April 20, 2016. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Pressure Washers". The seller is "theropshop" and is located in Bluffton, Indiana. This item can be shipped worldwide.