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.