CAT 67DX39G1I Pump – 4.2 GPM, 4,200 PSI, 1" Shaft

Professional Triplex Pump for Extreme Cleaning Power The CAT 67DX39G1I Pump Assembly (Bare Pump Part #85.110.031) is a high-performance triplex direct-drive gas pump for professionals who need maximum power, efficiency and long lasting reliability. With up to 4,200 PSI at 4.2 GPM this pump is perfect for industrial, commercial and demanding residential cleaning applications. Built by CAT Pumps, a global leader in durability and precision engineering, the 67DX39G1I has a brass manifold, ceramic plungers and built-in unloader in a rugged design that performs consistently under pressure. Backed by a 5 year warranty it has the professional grade dependability CAT is known for worldwide. Features Bare Pump Part #: N/A Pump Manufacturer: CAT Pumps Pump Model: 67DX39G1I Pump Style: Triplex, direct-drive gas Max PSI: 4,200 Max GPM: 4.2 Shaft Size: 1" horizontal shaft Unloader Type: Built-in Plunger (Piston): Ceramic for maximum heat resistance Inlet Size: 3/4" GHF (garden hose fitting) Discharge Size: 3/8" Brass QC (85.300.103) Soap Injector: Fixed Manifold Type: Brass RPM: 3,450 Max Inlet Temp: 60°C / 140°F Thermal Relief Valve: 85.300.024 included Oil Capacity: 13.5 oz Oil Type: 30W non-detergent oil Weight: 17 lbs Warranty: 5 Years Built for Maximum Performance The triplex plunger design is the professional standard for high-performance pumps. With three ceramic plungers the 67DX39G1IAB reduces vibration, smooths out operation and increases efficiency compared to axial pumps.Delivers 4,200 PSI of pressure and 4.2 GPM of water flow. The best of both worlds: cutting power for tough grime and plenty of water for fast coverage. Perfect for heavy-duty jobs like construction cleaning, industrial equipment maintenance and fleet washing. Durable Every part of the 67DX39G1I is built to last: Ceramic plungers for maximum heat and abrasion resistance, longer service intervals and longer pump life. Brass manifold for corrosion resistance and heat dissipation, protects internal components. 1” horizontal shaft for compatibility with most professional grade gas engines. Weighs 17 lbs so it’s rugged but manageable for installation and maintenance. Integrated Protection and Convenience Engineered for operator convenience and system protection: Built-in unloader regulates system pressure and protects against overpressurization. Fixed soap injector for easy detergent application with a low-pressure nozzle. Brass quick-connect discharge (3/8”) for a leak-free hose connection. Thermal relief valve (85.300.024) prevents damage during extended bypass cycles by releasing overheated water and refreshing it with cooler water. Maintenance Easy maintenance schedule to maximize pump life with minimal downtime: 13.5 oz of 30W non-detergent oil for lubrication. Regular oil checks and scheduled oil changes for peak performance. Inlet water temperature up to 140°F (60°C) for flexibility in various operating environments. These simple maintenance tasks will extend service life and performance. Applications The power and reliability of the CAT 67DX39G1IAB Pump Assembly makes it suitable for many demanding cleaning applications: Construction Sites – Remove mud, concrete dust and grease from tools and heavy equipment. Fleet Maintenance – Wash large vehicles like trucks, trailers and buses. Agriculture – Clean tractors, harvesters and other farm machinery. Industrial Cleaning – Clean grease, oil and grime on large equipment and wor