EZ4040G Bare - 4000PSI 4GPM 3400RPM

By : General Pumps

  • Quick Specs
  • PSI: 4000
  • GPM: 4
Regular Price: $329.85
In Stock

General Pumps EZ Series 44 Triplex Plunger Pump EZ4040 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 quick attachment to Gasoline engines up to 16 HP.

Features include:

  • Standard SAE J609 gasoline mounting flange for up to 16 hp engines includes bolt pack
  • Forged brass manifold with an exclusive lifetime warranty even against accidental freezing
  • Die-cast, anodized aluminum oil-bath crankcase includes oil, shipping plug and vented dipstick
  • Innovative one-piece plunger design to eliminate water entering crankcase
  • Premium roller bearing, Unitized stainless steel inlet and discharge valve


  • Maximum Volume: 4.0 GPM
  • Maximum Discharge Pressure: 4200 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″


GTIN: 682491016984
Manufacturer: General Pumps
PSI: 4000
GPM: 4
RPM: 3400

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