Cat Pumps 66DX30GG1 Triplex Pump – 3.0 GPM @ 4000 PSI, 3400 RPM, 1" Hollow Shaft

Part Number: 66DX30GG1
Category: Pressure Washing & High-Pressure Pump Systems
Type: Cat Pumps 66DX30GG1 Triplex Pump – 3.0 GPM @ 4000 PSI, 3400 RPM, 1" Hollow Shaft

The Cat Pumps 66DX30GG1 is a rugged, contractor-grade triplex pump built for high-pressure cleaning applications where durability and consistent output matter most. Delivering 3.0 GPM at 4000 PSI, this pump provides the ideal balance of pressure and flow for commercial pressure washers, surface cleaners, and professional mobile wash rigs.

Product Specifications

• Model: 66DX30GG1

• Type: Triplex Pressure Washer Pump

• Flow Rate: 3.0 GPM

• Max Pressure: 4000 PSI

• Operating Speed: 3400 RPM

• Shaft: 1" Hollow (Direct Drive)

• Bore Diameter: 14mm

• Stroke: 8.6mm

• Weight: 26.15 lbs

• Condition: New

Features & Benefits

• 3.0 GPM output for efficient, controlled cleaning

• 4000 PSI capability for heavy-duty surface preparation

• Triplex plunger design for smoother operation and longer lifespan

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

• Built for continuous-duty commercial use

• Significantly more durable than axial-style pumps

• Ideal for contractors, fleet washing, and professional pressure washer builds