SIMPSON 90025 Axial Cam Vertical Pressure Washer Replacement Pump 8.6CAV11 2400PSI @ 2.0GPM with Aluminum Head Direct drive vertical axial pump, 7/8shaft, thermal relief valve, SAE gas engine flange, threaded M22 pump outlet connection Universal to fit most brands/models Precision polished stainless steel pistons for improved seal life, dual oversized radial ball bearings for better wear and friction resistance Integrated unloader with easy-start feature Pre-sealed with oil inside pump