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General Pump EZ4040G Pressure Washer Pump 4.0 GPM 4000 PSI 3400 RPM 18 HP

SKU: EZ4040G


Ideal for medium to heavy duty general cleaning applications, this EZ Series 44 4.0 GPM 4000 PSI Hollow Shaft Pump is flanged for direct coupling to gasoline engines and includes a LIFETIME Manifold Warranty!

Availability: In stock

Ideal for medium to heavy duty power washer and pressure washer general cleaning applications, the EZ Series 44 Triplex Plunger Pump with hollow shaft is flanged for direct coupling to gasoline engines (SAE J609B). The pump has a forged brass manifold with an exclusive lifetime warranty. The flange is for mounting on engines up to 13 HP.

Need a “Ready to Go” Pump Solution without the hassle of building it yourself?Call us at 1-800-433-2113 to ask about our Our PowerWash Exclusive “Ready to Go” Edition which provides you with the complete and installed package needed to begin cold-water Pressure Washing Applications right away!

Features include:

  • Standard SAE J609 gasoline mounting flange for up to 13 hp engines
  • Forged brass manifold with an exclusive lifetime warranty and 3:1 hydrostatic rating
  • Die-cast, anodized aluminum oil-bath crankcase
  • Innovative one-piece plunger design to eliminate water entering crankcase
  • Premium roller bearing
  • 5% reduction in crankcase load compared to standard 3,000 PSI, 15 mm pumps
  • Unitized stainless steel inlet and discharge valves
  • Available in “L” left-handed versions


  • Maximum Volume: 4.0 GPM
  • Maximum Discharge Pressure: 4000 PSI
  • Maximum Pump Speed: 3400 RPM
  • Maximum Inlet Pressure: 125 PSI
  • Maximum Inlet Vacuum: 3ft. Water (2.6 in Hg)
  • Plunger Bore: .512 in. / 13 mm
  • Plunger Stroke: .512 in. / 13 mm
  • Crankcase Oil Capacity: 14.0 oz.
  • Maximum Fluid Temperature: 165 F
  • Inlet Port Thread: 1/2-14 BSPP-F
  • Discharge Port Thread: 3/8-19 BSPP-F
  • Shaft Diameter: 1.0 in. / 25.4 mm
  • Weight: 20 lbs.
  • Dimensions: 8.8″ x 9.7″ x 6.5″
  • Click here for spec sheet
Weight 20 lbs
Max Volume

Max Discharge Pressure

Max Pump Speed

Max Inlet Pressure

Bore Diameter


Max Fluid Temp.

Inlet Port

Discharge Port




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