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PRESSURE WASHER PUMP 4.0 GPM 4000 PSI EZ4040 GENERAL PUMP FULLY

$469.00

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Overview

This is the General Pump EZ4040G fully plumbed replacement pump, a 4 GPM, 4000 PSI direct-drive triplex rated for 3400 RPM with a 1″ hollow shaft. "Fully plumbed" means the plumbing work is done for you: the pump ships with the VRT3-310EZ unloader/regulator, a water inlet fitting with filter, an easy start valve, a thermo valve, and crankcase oil already in the box. Mount it, set the pressure, and you're ready to go. The standard SAE J609 gasoline flange fits gas engines up to 13 hp, making this a straightforward bolt-on swap for a worn-out pump on a direct-drive gas pressure washer. Build quality is General Pump's usual: forged brass manifold with a lifetime warranty, one-piece ceramic-coated plungers, and unitized stainless steel inlet and discharge valves.

What's included

  • Complete fully plumbed package: VRT3-310EZ unloader/regulator, water inlet fitting with filter, easy start valve, thermo valve, and oil
  • Standard SAE J609 gasoline mounting flange fits gas engines up to 13 hp
  • Forged brass manifold with lifetime warranty and 3:1 hydrostatic rating
  • One-piece ceramic-coated plungers with new plunger/guide improvements
  • Unitized stainless steel inlet and discharge valves
  • Die-cast anodized aluminum oil-bath crankcase, 15 oz capacity
  • Premium roller bearing; 5% lower crankcase load vs standard 3000 PSI 15 mm pumps
  • Left-handed ("L") shaft versions available

Specifications

Pump
General Pump EZ4040G
GPM
4.0
PSI
4000
Type
Direct drive, triplex plunger
Shaft
1″
RPM
3400
Unloader
VRT3-310EZ (included)
Mounting Flange
SAE J609, gas engines up to 13 hp
Manifold
Forged brass
Crankcase Capacity
15 oz oil bath

Frequently asked questions

Fully plumbed means the pump arrives ready to run: it includes the VRT3-310EZ unloader/regulator, a water inlet fitting with filter, an easy start valve, a thermo valve, and crankcase oil. Just mount the pump to your engine, set the pressure, and go.

It fits gas engines up to 13 hp with a standard SAE J609 mounting flange and a 1″ shaft, running direct drive at 3400 RPM. That covers most common direct-drive gas pressure washer engines. A left-handed "L" shaft version is also available for opposite-rotation setups.

Yes. General Pump requires both a primary pressure regulating device (the included unloader) and a secondary pressure safety relief device such as a pop-off or safety valve. Running without a secondary relief device risks injury and damage to the pump and system.

Yes — if your machine runs a direct-drive gas engine up to 13 hp with a 1″ shaft, this is a straightforward bolt-on replacement rated 4 GPM at 4000 PSI. Because the unloader and plumbing come pre-installed, it removes most of the guesswork of a pump swap.

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