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CAT 66DX30G1I Direct Drive Plunger Pump 3GPM, 4000PSI

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27.30 lbs
Usually Ships in 2 Weeks
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This pump includes the mounting flange that goes between the blue crankcase and engine. Includes unloader with fixed chemical injector.

Technical Specifications

Bore: 14 millimeter
Crankcase Capacity: 18 ounce
Inlet Port: 1/2 inch
Max GPM: 3
Max PSI: 4000
Max Temperature: 140 degrees F
RPM: 3400
Shaft Diameter: 1 inch
Stroke: 8.8 millimeter

Product Description

66DX Plunger Pump with Unloader and Injector - 3 GPM

This direct-drive plunger pump has a brass manifold, 304SS valve assemblies, and solid ceramic plungers. It has a triplex design with three plunger rods. It comes standard with NBR (Buna-N) seals and o-rings. 

This model is popular in the pressure wash industry. The flange-mount, hollow-shafted pump is designed to bolt directly to a gas engine drive for easy, compact installation. 

Dimensions: 11.73" x 10.51" x 8.15"


  • Maximum flow: 3 GPM
  • Pressure range: 100-4000 PSI
  • 3400 RPM
  • Direct drive

Compatible Parts and Accessories:

  • 6107 crankcase oil
  • 6089 pressure gauge
  • 6011 pulsation dampener
  • 7104, 7203, 7204 inlet filters
  • 990840 flexible inlet hose
  • 990857 flexible discharge hose
  • 34334 oil drain kit
  • 6108 pressure washer pump protector
  • 33962 pop-off valve

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