CAT 66DX40G1I Pump Assembly – 4.2 GPM, 4,200 PSI, 1" Shaft

Pro Triplex Pump for Extreme Cleaning The CAT 66DX40G1I Pump Assembly (Bare Pump Part #85.110.025) is a heavy duty triplex direct-drive gas pump for pros, industrial users and anyone who needs maximum performance from their equipment. 4,200 PSI at 4.2 GPM. Ideal for the toughest cleaning applications from construction sites to fleet maintenance and industrial equipment care. Built by CAT Pumps, a global leader in innovation and reliability, the 66DX40G1I has a brass manifold, ceramic plungers and external unloader for maximum durability and serviceability. 5 year warranty. Built to last in tough conditions. Features Bare Pump Part #: 85.110.025 Pump Manufacturer: CAT Pumps Pump Model: 66DX40G1I Pump Style: Triplex, direct-drive gas Max PSI: 4,200 Max GPM: 4.2 Shaft Size: 1" horizontal shaft Unloader Type: External (85.300.037) Plunger (Piston): Ceramic for maximum heat and wear resistance Inlet Size: 3/4" GHF (garden hose fitting) Discharge Size: 3/8" Brass QC (85.300.108) Soap Injector: Adjustable (85.400.000) Manifold Type: Brass RPM: 3,450 Max Inlet Temp: 60°C / 140°F Thermal Relief Valve: 85.300.023 included Oil Capacity: 18 oz Oil Type: 30W non-detergent oil Weight: 27 lbs Warranty: 5 Years Built for ProsTriplex Plunger Design The triplex plunger design is the industry standard for pro-grade pumps. Smoother operation, higher efficiency and longer life than axial pumps. Three precision ceramic plungers resist heat and abrasion for long term performance in the toughest environments. 4,200 PSI and 4.2 GPM for heavy duty cleaning: stripping paint, blasting grease and oil from machinery, washing large vehicles or construction equipment. Rugged Construction The CAT 66DX40G1I Pump Assembly is built with materials and components for reliability and strength: Ceramic plungers for heat and abrasion resistance for long life. Brass manifold for superior corrosion resistance and heat dissipation to protect seals and internal parts. 1” horizontal shaft for compatibility with a wide range of gas powered engines used in pro-grade pressure washers. 27 lbs. Robust build without sacrificing installation and maintenance efficiency. Convenient Features Built for maximum control and ease of use for the operator: External unloader (85.300.037) for precise pressure regulation and easier servicing than built-in unloaders. Adjustable soap injector (85.400.000) for controlled detergent application for tough jobs. Brass quick-connect discharge (3/8” – 85.300.108) for fast setup and leak free hose connection. Thermal relief valve (85.300.023) to protect the pump from overheating during extended bypass cycles by releasing overheated water. Maintenance Easy maintenance extends the life of the pump: 18 oz of 30W non-detergent oil for lubrication. Oil checks and changes are simple tasks to keep the pump running at peak performance. Can handle water inlet temperatures up to 140°F (60°C) for flexibility in cleaning applications. These service friendly features make the 66DX40G1I a long term solution. Applications The CAT 66DX40G1I Pump Assembly is a versatile pump for the toughest cleaning jobs. High PSI and strong water flow for multiple industries: Construction Sites – Mud, concrete residue and debris from tools and heavy equipment. Fleet and Vehicle Washing – Buses, trucks, trailers and large vehicles. Agriculture – Tractors, harvesters and implements. Industrial Applications – Grease, oil and grime from large machinery and work areas.