Part Number: RKV4G37D-F24
Category: Pressure Washer Pumps → Triplex Pumps → Gas Pressure Washer Pumps
Type: AR RKV4G37D-F24 Pressure Washer Pump – 4.0 GPM 3600 PSI 3400 RPM 1" Hollow Shaft

The AR RKV4G37D-F24 Pressure Washer Pump (Part #RKV4G37D-F24) is a genuine OEM triplex plunger pump engineered for demanding commercial and industrial pressure washing applications. Manufactured by Annovi Reverberi (AR), this heavy-duty direct-drive pump delivers 4.0 GPM at 3,600 PSI, providing outstanding cleaning power for fleet washing, heavy equipment, construction sites, agriculture, manufacturing facilities, and other high-performance cleaning environments.

Key Features & Benefits

• Genuine AR (Annovi Reverberi) OEM triplex pressure washer pump
• Part Number: RKV4G37D-F24
• Heavy-duty triplex plunger design
• Delivers up to 4.0 GPM at 3,600 PSI
• Designed for gas-powered pressure washers
• 1-inch hollow shaft
• F24 flange mount
• Operates at 3,400 RPM
• Compatible with engines up to 12.5 GHP
• Smooth, efficient pump operation
• Durable OEM construction for demanding commercial applications
• Ideal for continuous-duty pressure washing systems

Technical Specifications

Part Number: RKV4G37D-F24

Pump Model: RKV4G37D

Manufacturer: AR (Annovi Reverberi)

Product Type: Triplex Pressure Washer Pump

Maximum Flow Rate: 4.0 GPM

Maximum Pressure: 3,600 PSI

Maximum Pump Speed: 3,400 RPM

Gas Horsepower (GHP): 12.5

Shaft Size: 1" Hollow Shaft

Flange Type: F24

Pump Orientation: Horizontal Direct Drive

Weight: 21 lbs

OEM Replacement: Yes

Compatible Applications

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

• 1-inch hollow shaft engines
• F24 flange mounting configuration
• Engines up to 12.5 GHP
• Commercial pressure washers
• Industrial cleaning equipment
• Fleet washing systems
• Agricultural equipment cleaning
• Construction equipment cleaning
• Equipment replacement and repair projects
• OEM equipment installations

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

Function of the Pressure Washer Pump

The RKV4G37D-F24 pump helps:

• Deliver up to 4.0 GPM of water flow
• Produce operating pressures up to 3,600 PSI
• Restore pressure washer performance
• Provide powerful cleaning for demanding commercial applications
• Improve pump efficiency
• Deliver reliable continuous-duty operation

Its triplex plunger design offers superior durability, smoother performance, and longer service life than conventional 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 housing
• Excessive internal wear
• Loss of cleaning performance
• Pump failure during operation

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

Installation & Service Notes

• Shut down the pressure washer and disconnect the spark plug before servicing.
• Relieve all system pressure.
• Verify compatibility with the engine shaft, F24 flange mount, horsepower, and pressure requirements.
• Install the pump according to the manufacturer's specifications.
• Connect the water inlet and high-pressure discharge plumbing.
• Fill the crankcase with the recommended pump oil before operation if required.
• Prime the pump with water before startup.
• Verify proper operation and inspect for leaks 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 the pump oil level regularly and change the oil according to AR maintenance schedules.
• Inspect seals, valves, and fittings during routine maintenance.
• Maintain clean, filtered inlet water to reduce internal wear.
• Flush the pump after use when pumping dirty or corrosive water.
• Use only genuine OEM AR replacement parts and approved lubricants to maintain optimum performance, reliability, and long service life.