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CAT 66DX — Review & Specs | Pricepect | Pricepect

Home Pressure Washer PumpsCAT 66DX

CAT 66DX — image 1

CAT Pumps

CAT 66DX

$749.99

A1578201Black3

Pressure Washer Pumps

Expert Review Analysis

The CAT Pumps 6DX35G1I is a direct-drive, triplex plunger pressure washer pump designed for commercial gas engines, delivering 3.5 GPM at up to 4000 PSI. It features a durable construction with ceramic plungers, a brass manifold, and a pre-plumbed modular regulating unloader with a chemical injector for versatile cleaning applications.

✓ Best for: Commercial pressure washing professionals requiring high-performance direct-drive pumps for gas engines, specifically for heavy-duty cleaning of industrial surfaces, vehicles, or construction sites needing 3.5 GPM at 4000 PSI with chemical injection capabilities.✗ Not ideal for: Users with smaller gas engines under 11 HP or those requiring adjustable pressure controls for delicate surface cleaning tasks.

Pros

✓Delivers high pressure of 4000 PSI and flow of 3.5 GPM for demanding commercial cleaning tasks
✓Features durable solid ceramic plungers and brass manifold for extended longevity and reliability
✓

Best Seller Rank History

Now#325Best#158Worst#337 -83

Lower = better sales rank

Rating Trend

Rating4.8/ 5Reviews20

Specifications

Design

Dimensions11.73 x 10.51 x 8.15 in in

Shaft Diameter1 in mm

Engine Mounting Face6.5 in mm

Crankcase Capacity18 oz ml

Manifold MaterialBrass

Features

Unloader TypeModular Regulating with Chemical Injector

Unloader Flow Range2.0-5.0 GPM GPM

Unloader Pressure Range700-4000 PSI PSI

Unloader Inlet Size1/2" NPTF

Adjustable PressureNo

General

BrandCAT Pumps

Model66DX35G1I

Warranty12 months parts / 12 months labor

Weight26.8 lbs g

ColorBlack

Performance

Maximum Pressure4000 PSI PSI

Flow Rate3.5 GPM GPM

Pump RPM3400 RPM RPM

Horsepower Required11-13 HP HP

Pressure Range100-4000 PSI PSI

Materials

Valve Assembly Material304 Stainless Steel

Capacity

Crankcase Oil Capacity18 oz

Dimensions & Weight

Weight26.79939256872 Pounds

Research Sources

northerntool.com

pittsburghsprayequip.com

kleen-ritecorp.com

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5.0

(20 reviews)

Includes a pre-plumbed modular regulating unloader with chemical injector for easy setup and versatility

✓Triplex plunger design provides smooth flow with reduced pulsation for consistent performance

✓Lightweight design at approximately 20-30 lbs facilitates portability for field use

Cons

✗Requires a 11-13 HP gas engine which limits compatibility to larger and more powerful setups
✗Lacks adjustable pressure control features which may restrict fine-tuning for delicate surfaces
✗Specific mounting dimensions require verification to ensure compatibility with engine face plates

How It Compares

vs. AR North America RMW22G24SX

Advantages

✓CAT pump delivers significantly higher maximum pressure (4000 PSI vs 2400 PSI)
✓CAT pump offers higher flow rate (3.5 GPM vs 2.2 GPM) for faster cleaning

Disadvantages

✗CAT pump requires higher horsepower engine (13 HP) compared to unspecified lower HP needs of competitor
✗CAT pump is heavier (30 lb shipping weight) compared to the lighter competitor unit

Choose the CAT pump for heavy-duty commercial jobs requiring high pressure and flow, while the AR pump is better for lighter tasks where weight and lower power requirements are priorities.