Cat Pumps 66DX35GG1 Triplex Pump – 3.5 GPM @ 4000 PSI, 3400 RPM, 1" Hollow Shaft

Part Number: 66DX35GG1
Category: Pressure Washing & High-Pressure Pump Systems
Type: Cat Pumps 66DX35GG1 Triplex Pump – 3.5 GPM @ 4000 PSI, 3400 RPM, 1" Hollow Shaft

The Cat Pumps 66DX35GG1 is a professional-grade triplex plunger pump engineered for high-output, high-pressure cleaning applications. Producing 3.5 GPM at 4000 PSI, this model delivers increased flow over standard 3.0 GPM pumps—making it ideal for faster rinsing, improved surface coverage, and higher productivity on the job.

Product Specifications

• Model: 66DX35GG1

• Type: Triplex Pressure Washer Pump

• Flow Rate: 3.5 GPM

• Max Pressure: 4000 PSI

• Operating Speed: 3400 RPM

• Shaft: 1" Hollow (Direct Drive)

• Bore Diameter: 14mm

• Stroke: 10.0mm

• Weight: 26.15 lbs

• Condition: New

Features & Benefits

• Higher 3.5 GPM output for faster cleaning and rinsing

• 4000 PSI performance for heavy-duty surface preparation

• Triplex plunger design for smooth operation and long service life

• 1" hollow shaft for direct-drive gas engine mounting

• Built for continuous-duty commercial applications

• More durable and serviceable than axial cam pumps

• Ideal for professional pressure washer builds, surface cleaners, and contractor rigs