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General EZ4040G – Pressure Washer Pump 4.0 GPM @ 4000 PSI


SKU: EZ4040G Categories: ,


General EZ4040G – Pressure Washer Pump 4.0 GPM @ 4000 PSI

General Pump / Interpump EZ4040G pressure washer pump 4000 PSI @ 4.0 GPM is a bare pump with no plumbing. Use your old plumbing parts and save money, OR if your not sure if your parts are OK, please order the EZ4040G-SUB that comes complete !

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 4,000 PSI, 15 mm pumps
Unitized stainless steel inlet and discharge valves
Available in L left-handed versions

Maximum Volume 4 GPM
Max. Discharge Pressure 4000 PSI
Maximum Pump Speed 3400 RPM
Maximum Inlet Pressure 125 PSI
Plunger Bore .512 in. / 13 mm
Plunger Stroke .512 in. / 13 mm
Crankcase Oil Capacity 14 oz.
Maximum Fluid Temperature 165 degrees F
Inlet Port Thread 1/2 in.- 14 BSPP-F
Discharge Port Thread 3/8 in.- 19 BSPP-F
Shaft Diameter 1.0 in. / 25.4 mm
Weight 20 lbs.
Dimensions 8.8 in. x 9.7 in. x 6.5 in.

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Customer Questions & Answers

  1. Q Will this pump draw from a buffer tank? answer now
    Asked by Al on September 8, 2021 9:47 am
    A This pump will work if plumbed directly with a 1/1/2 inch line/inlet and the tank is positioned above the the pump inlet.
  2. Q What oil put in crankcase answer now
    Asked by Jose novoa on October 25, 2019 7:45 am
    Answered by the admin

    We recommend General Pumps Series 100 Pump Oil:

    This is the best oil you can get for your EZ4040.

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Prop 65 Warning!

This product can expose you to chemicals which are known to the State of California to cause cancer.