4DX29GUIF Cat Pressure Washer Pump 2.9 GPM 2600 PSI Triplex Positive Displacement Plunger , Fits a Standard 3/4-inch Crankshaft Diameter , Mounts to a Standard SAE J609 Gas Engine Flange , Brass Block , Standard Buna-N Seals

CAT Pumps 4DX29GUIF Direct-Drive Triplex Plunger Pump with Unloader & Chemical Injector – 2.9 GPM, 2600 PSI Gas Pressure Washer Pump

The CAT Pumps 4DX29GUIF is a compact Triplex Plunger Pump designed specifically for direct-drive gas engine applications. As a true Positive Displacement Pump, it delivers a consistent flow rate with high efficiency, ensuring reliable performance for portable cleaning systems. This model is built with a high-strength Brass manifold and 304 Stainless Steel valve assemblies, providing excellent durability and corrosion resistance.

Engineered for easy integration, the 4DX29GUIF features a 3/4" hollow shaft that mounts directly to standard 5.5HP–6.5HP gas engines. It comes fully assembled with an integral regulating unloader and a fixed chemical injector, making it a complete, "plug-and-play" solution for pressure washing units. With a verified flow rate of 2.9 GPM at 2,600 PSI, it offers the ideal balance of cleaning power and portability for residential and light commercial use.