
Toolcy Pressure Washer Pump
Score: 82/100
CAT 67DX
Score: 85/100Rankings

The CAT Pumps 67DX39G1I is a high-performance direct-drive triplex plunger pump delivering 4000 PSI at 3.9 GPM, ideal for professional surface cleaning. Its adjustable unloader and chemical injector offer significant versatility, though it is limited to cold water use. It is best suited for horizontal shaft gas engine setups utilizing 1-inch SAE J609 flange mounts.

The Toolcy Pressure Washer Pump is a horizontal, direct-drive replacement unit featuring a triplex plunger design with a maximum pressure of 3600-4400 PSI and a flow rate of 4.4 GPM. It is constructed with a fully anodized black crankcase and solid brass pump head, designed for residential and light commercial cleaning tasks on surfaces like driveways and decks. Best suited for DIY homeowners or light commercial users upgrading gas pressure washers with horizontal engines.
| Attribute | ![]() | ![]() |
|---|---|---|
4,400 PSIbest | 4,000 PSI | |
4.4 GPMbest | 3.9 GPM | |
1 inchesbest | 1 inchesbest | |
— | 3,450 RPMbest | |
0.75 inchesbest | 0.5 inches | |
0.375 inchesbest | 0.375 inchesbest | |
— | 0.423 quartsbest | |
| ↓ lower better | 20 lbs | 17 lbsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Maximum Pressure (PSI) | 4400 PSI | 4000 PSI |
Flow Rate (GPM) | 4.4 GPM | 3.9 GPM |
Compatibility & Mounting(2) | ||
Shaft Type | Horizontal | Hollow |
Inlet Port Size (inches) | 0.75 inches | 0.5 inches |
Durability & Maintenance(1) | ||
Seal System | Advanced Oil Seal | NBR |
Physical(1) | ||
Product Weight (lbs) | 20.0 lbs | 17.0 lbs |
Features & Control(1) | ||
Unloader Type | Adjustable | Integral Adjustable |
Safety & Features(1) | ||
Max Water Temperature (°F) | Cold °F | 140 °F |


Products in the top-left offer the best value (high score, low price).

Professional reviewers and video overviews highlight the Toolcy pump's robust construction, specifically noting the anodized crankcase and brass head as key factors for longevity. The versatile pressure adjustment and compatibility with major engine brands like Honda and Simpson are praised.
Direct user feedback is sparse, but inferred comments from product pages suggest high satisfaction with the ease of renewal for old washers and the strong performance at standard operating pressures. Users appreciate the simple setup process.

Manufacturer documentation emphasizes the pump's reliability for pressure washing, highlighting the triplex plunger design for high efficiency and low pulsation. The direct-drive capability is noted for eliminating the need for pulleys, belts, and gearboxes, while retail specifications point out the ease of servicing and CARB approval.
No consumer reviews, praise, or complaints were found in the search results. Official documents imply suitability for demanding use through durable components, but no real-world user data is available to assess everyday sentiment.
