66DX50G1I Cat Pressure Washer Triplex Positive Displacement Pump 5GPM 3500PSI , Slides onto a 1-inch Crankshaft Standard , SAE J609 Gas Flange , Forged Brass Block

CAT Pumps 66DX50G1I Plunger Pump

The CAT Pumps 66DX50G1I is a high-volume Triplex Plunger Pump engineered for professional direct-drive gas engine applications. As a true Positive Displacement Pump, it features three synchronized solid ceramic plungers that deliver a powerful, consistent flow, making it ideal for high-production cleaning where rinsing speed is critical. The pump head is constructed from a high-strength Forged Brass manifold and 304 Stainless Steel valve assemblies, ensuring exceptional durability and resistance to thermal shock in demanding commercial environments.

Designed for seamless integration with large frame engines, the 66DX50G1I features a 1" hollow shaft that bolts directly to 13HP–16HP gas engines. It comes fully assembled with a modular regulating unloader valve and a fixed chemical injector, providing a complete "drop-in" solution for heavy-duty pressure washing systems. With a verified flow rate of 5.0 GPM at 3,500 PSI, it offers maximum cleaning impact for fleet washing, agricultural cleaning, and flatwork.