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AR RSV4G40HD-F40EZ Pressure Washer Pump – 4.0 GPM 4000 PSI 1" Gas Shaft Brass Head

Original price $550.00 - Original price $550.00
Original price
$550.00
$550.00 - $550.00
Current price $550.00

Part Number: RSV4G40HD-F40EZ
Category: Pressure Washer Pumps → Triplex Pumps → Gas Pressure Washer Pumps
Type: AR RSV4G40HD-F40EZ Pressure Washer Pump – 4.0 GPM 4000 PSI 1" Gas Shaft Brass Head


The AR RSV4G40HD-F40EZ Pressure Washer Pump (Part #RSV4G40HD-F40EZ) is a genuine OEM triplex plunger pump engineered for demanding commercial and industrial pressure washing applications. Built by Annovi Reverberi (AR), this heavy-duty pump delivers 4.0 GPM at 4,000 PSI, providing exceptional cleaning power for professional contractors, fleet washing, construction equipment maintenance, agriculture, and industrial cleaning.


Key Features & Benefits

  • Genuine AR (Annovi Reverberi) OEM pressure washer pump
  • Part Number: RSV4G40HD-F40EZ
  • Heavy-duty triplex plunger pump
  • Durable forged brass pump head
  • Delivers up to 4.0 GPM at 4,000 PSI
  • Designed for direct-drive gas-powered pressure washers
  • 1-inch hollow shaft
  • Operates at 3,400 RPM
  • Compatible with engines up to 14.5 HP
  • Smooth, reliable triplex plunger performance
  • Excellent durability for commercial and industrial applications
  • OEM-quality construction and long service life

Technical Specifications

Part Number: RSV4G40HD-F40EZ

Pump Model: RSV4G40H

Manufacturer: AR (Annovi Reverberi)

Product Type: Triplex Pressure Washer Pump

Pump Head Material: Forged Brass

Maximum Flow Rate: 4.0 GPM

Maximum Pressure: 4,000 PSI

Maximum Pump Speed: 3,400 RPM

Horsepower: 14.5 HP

Shaft Size: 1" Hollow Shaft

Pump Orientation: Horizontal Direct Drive

Weight: 14 lbs

OEM Replacement: Yes


Compatible Applications

Designed for use with compatible gas-powered pressure washer systems featuring:

  • 1-inch horizontal engine shafts
  • Engines up to 14.5 HP
  • Commercial pressure washers
  • Industrial pressure washer systems
  • Fleet washing equipment
  • Agricultural cleaning equipment
  • Construction equipment cleaning
  • OEM equipment replacement and new installations

Always verify shaft size, mounting configuration, engine horsepower, and pressure/flow requirements before ordering.


Function of the Pressure Washer Pump

The RSV4G40HD-F40EZ pump helps:

  • Deliver up to 4.0 GPM of water flow
  • Generate operating pressures up to 4,000 PSI
  • Provide consistent high-pressure cleaning performance
  • Support demanding commercial and industrial applications
  • Restore pressure washer performance
  • Deliver reliable operation during continuous use

Its heavy-duty triplex plunger design provides smoother operation, increased efficiency, and a longer service life compared to axial cam pumps.


Common Signs Replacement Is Needed

Replace the pump if you notice:

  • Reduced operating pressure
  • Decreased water flow
  • Water or oil leaks
  • Excessive operating noise
  • Cracked or damaged pump head
  • Loss of pumping performance
  • Excessive internal wear
  • Pump failure during operation

Replacing a worn pump restores cleaning performance while minimizing equipment downtime.


Installation & Service Notes

  • Shut down the pressure washer and relieve all system pressure.
  • Disconnect the spark plug before servicing.
  • Verify compatibility with the engine shaft, mounting flange, horsepower, and pressure requirements.
  • Install the pump according to the manufacturer's specifications.
  • Connect the water inlet and high-pressure discharge fittings.
  • Fill the pump with the recommended lubricant if required.
  • Prime the pump with water before startup.
  • Inspect the system for leaks and verify proper operating pressure after installation.

Important: Never operate the pump without an adequate water supply. Running the pump dry can quickly damage internal plungers, seals, and valves, significantly reducing pump service life.


Maintenance Recommendations

  • Check pump oil level regularly and change oil according to AR service intervals.
  • Inspect seals, valves, and fittings for leaks during routine maintenance.
  • Maintain clean, filtered inlet water to reduce internal wear.
  • Flush the pump after use when handling dirty or corrosive water.
  • Use only genuine OEM AR replacement parts and recommended lubricants to maintain optimum pump performance, reliability, and long service life.

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