Factory-Quality Replacement Pump for Gas Pressure Washers
The AR RMW22G24-EZ Pump Assembly is a genuine replacement part designed to restore the performance of your gas-powered pressure washer. Manufactured by Annovi Reverberi (AR), one of the world’s leading pump producers, this axial cam, direct-drive pump delivers up to 2,400 PSI at 2.2 GPM, providing the power needed for residential and light-duty commercial cleaning.
Packaged boxed and ready for installation, this assembly includes everything you need to get back up and running quickly. Whether your existing pump is worn out or underperforming, the RMW22G24-EZ is the trusted, factory-approved solution to keep your pressure washer working like new.
Key Features
Pump Manufacturer: Annovi Reverberi (AR)
Pump Model: RMW22G24-EZ
Pump Style: Axial cam, direct-drive gas
Max PSI: 2,400
Max GPM: 2.2
Shaft Size: 7/8"
Unloader Type: Built-in
Plunger (Piston): Tempered steel for strength and durability
Inlet Size: 3/4" GHF (garden hose fitting)
Discharge Size: M22 threaded connection
Soap Injector: Fixed, integrated for easy detergent application
Manifold Type: Aluminum for lightweight strength
RPM: 3,400
Max Inlet Temp: 43°C / 110°F
Thermal Relief Valve: 85.300.022 included
Oil Capacity: 2.2 oz
Oil Type: 30W non-detergent pump oil
Weight: 7.3 lbs
Warranty: 1 Year
Engineered for Reliable Performance
The AR RMW22G24-EZ is one of the most common factory-installed pumps on residential gas-powered pressure washers. Built with an axial cam direct-drive design, it provides efficient power transfer from engine to pump while maintaining a compact footprint. Its 7/8” hollow shaft ensures wide compatibility with small engines used on popular homeowner units.
Delivering up to 2,400 PSI of cleaning power and a flow rate of 2.2 GPM, this pump provides strong, consistent water pressure for a variety of cleaning jobs. From washing cars and boats to blasting dirt from driveways and siding, the RMW22G24-EZ supplies the performance needed for everyday use.
The tempered steel plungers improve wear resistance and longevity, while the lightweight aluminum manifold keeps the pump durable without unnecessary weight. Together, these materials deliver the balance of strength and efficiency that AR pumps are known for.
Simplified Operation with Built-In Features
To reduce installation time and complexity, this pump comes equipped with a built-in unloader valve. This integrated feature regulates pressure automatically, protecting the pump and ensuring consistent output without requiring additional external components.
A fixed chemical injector is also included, allowing users to easily apply soap or detergents directly through the pump system. With this function, tough cleaning jobs like removing mildew, oil stains, or heavy grime become easier and more effective.
The EZ designation identifies the pump’s shaft alignment, making it easier to match with compatible engines during installation.
Thermal Protection and Maintenance
The AR RMW22G24-EZ includes a thermal relief valve (85.300.022), which helps prevent damage during extended bypass operation. This feature automatically releases overheated water, replacing it with cooler water to protect the pump head and seals.
Routine maintenance is simple. The pump requires only 2.2 oz of 30W non-detergent oil, making oil checks and changes quick and inexpensive. With a maximum inlet water temperature of 110°F (43°C), the pump is protected against premature wear from heat, further extending its lifespan.
Common Applications
The AR RMW22G24-EZ Pump Assembly is a direct replacement pump for many residential gas pressure washers. Lightweight and durable, it is designed for homeowners who need reliable cleaning performance across a wide range of tasks:
Driveways and Sidewalks – Remove dirt, oil, and weather buildup.
