Cat Pumps
67DX39G1I Cat Pressure Washer Pump 3.9 GPM , 4,000 PSI Triplex Positive Displacement Plunger Pump , 67DX Series , 1" Crankshaft Diameter , SAE J609 Gas Flange , Forged Brass Block , Buna-N Seals & O-rings
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The CAT Pumps 67DX39G1I is a high-performance Triplex Plunger Pump engineered for heavy-duty gas engine pressure washers. As a direct-drive unit, it is designed to bolt directly to large frame engines (like the Honda GX390) via a 1" hollow shaft. This model is famous for its durability, featuring a Forged Brass manifold that offers superior strength against cracking compared to standard cast pumps.
Fitment Note: This pump requires a gas engine with a 1" Horizontal Shaft (typically 9HP to 13HP). It will not fit smaller 5HP–6.5HP engines.
| SPECIFICATION | DETAILS |
| Model Number | 67DX39G1I |
| Manufacturer | CAT Pumps |
| Cross-Reference Part # | Replaces Simpson 7107583 |
| Pump Type | Triplex Plunger Pump |
| Material (Manifold) | Forged Brass (FBB) |
| Material (Valves) | 304 Stainless Steel |
| Max Flow Rate | 3.9 GPM (Adjustable to 4.0 GPM) |
| 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 | 3450 |
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Product Disclaimer & Limitation of Liability
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