Cat Pumps
66DX40G1I CAT Pressure Washer Triplex Positive Displacement Plunger Pump 4.0 GPM 4000 PSI , 1-inch Crankshaft Diameter , SAE J609 Gas Flange , Forged Brass Block
66DX40G1I CAT Pressure Washer Triplex Positive Displacement Plunger Pump 4.0 GPM 4000 PSI , 1-inch Crankshaft Diameter , SAE J609 Gas Flange , Forged Brass Block
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66DX40G1I CAT Pressure Washer Triplex Positive Displacement Plunger Pump 4.0 GPM 4000 PSI , 1-inch Crankshaft Diameter , SAE J609 Gas Flange , Forged Brass Block
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CAT Pumps 66DX40G1I Plunger Pump
The CAT Pumps 66DX40G1I is a high-performance Triplex Plunger Pump engineered for heavy-duty gas engine pressure washers. As a Positive Displacement Pump, it utilizes three synchronized plungers to deliver a consistent, powerful flow regardless of system pressure changes. This model is constructed with a durable Brass manifold and 304 Stainless Steel valve assemblies, ensuring excellent resistance to corrosion and wear in demanding commercial environments.
Designed for direct-drive efficiency, the 66DX40G1I features a 1" hollow shaft that bolts directly to the face of 9HP to 13HP gas engines (such as the Honda GX390). It comes fully assembled with a modular regulating unloader and a fixed chemical injector, providing a complete "bolt-on" solution for professional pressure washing equipment. With a verified flow rate of 4.0 GPM at 4,000 PSI, it provides the high-impact cleaning power needed for stripping paint, cleaning concrete, and washing industrial machinery.
| SPECIFICATION | DETAILS |
| Model Number | 66DX40G1I |
| Manufacturer | CAT Pumps |
| Pump Type | Triplex Plunger Pump |
| Displacement Type | Positive Displacement |
| Material (Manifold) | Brass |
| Material (Valves) | 304 Stainless Steel |
| Max Flow Rate | 4.0 GPM (15.1 LPM) |
| Applied Pressure (Test) | 4000 psi |
| Max Operating Pressure | 4000 psi |
| Max Liquid Temp | 140°F (60°C) |
| Inlet Port Size | 1/2" NPT(F) |
| Discharge Port Size | 3/8" NPT(F) |
| Shaft Diameter | 1" Hollow |
| RPM | 3400 |
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