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Top 6June 2025

Best Ar Pressure Washer Pump 4000 Psi

We made a list of the top 6 Ar Pressure Washer Pump 4000 Psi based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

OEM | AR 1" Shaft 4000 PSI Horizontal PRESSURE WASHER PUMP RRV4G40HD-F24, RRV4G40HDF24

OEM | AR 1" Shaft 4000 PSI Horizontal PRESSURE WASHER PUMP RRV4G40HD-F24, RRV4G40HDF24

✓OEM | AR 1" Shaft 4000 PSI Horizontal PRESSURE WASHER PUMP RRV4G40HD-F24, RRV4G40HDF24
✓Specs - Maximum Pressure: 4000 PSI. Maximum Flow: 4 GPM. Shaft Size: 1". Maximum Fluid Temperature: 140° F. Inlet Type: 1/2" Female. Outlet Type: 3/8" Female. Oil Capacity: 13.35oz. Refer to images 2 and 3 for more information
✓Includes - (1) Horizontal Pressure Washer Pump, (1) Oil Cap, (4) Bolts, & (4) Lock Washers; comes as shown in the first image (does NOT include water inlet, water outlet, unloader valve, thermal valve, or chemical injector)
✓The RRV Series are designed to direct drive on gasoline engines ranging from 5-15 HP. Life tested over 500 hours at maximum performance of 4 GPM at 4,000 PSI. Intended use for medium to heavy tasks
✓Please note it is not recommended to run any pressure washer pump above its maximum PSI rating. Doing so can result in damage to the pump (not covered by warranty) and/or serious bodily injury

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32% Discount

ANNOVI REVERBERI RRV4G40-VRT-PKG Pressure Washer Pump, 4000 PSI, 4 GPM Replacement Pump w/ VRT3 Unloader, TRF

ANNOVI REVERBERI RRV4G40-VRT-PKG Pressure Washer Pump, 4000 PSI, 4 GPM Replacement Pump w/ VRT3 Unloader, TRF

Annovi Reverberi

✓Performance: RRV4G40HD-F24 can produce up to 4000 Max PSI, 4 Max GPM, and up to 3400 RPM
✓Package Includes: RRV4G40HD-F24 pump, VRT3-310EZ unloader, TPP140 thermal relief valve, AL-PLUG3/8MB quick coupling plug, and 3 foot bypass hose.
✓Brass Construction: The RRV4G40HD-F24 is built from forged corrosion free brass perfect for a wide range of cleaning environments. This package also features a VRT3-310EZ brass unloader.
✓VRT3-310EZ Unloader: This unloader is used to relieve built up pressure within your pump, this unloader can handle up to 4,500 Max PSI, 10.5 Max GPM.
✓Thermal Relief Valve: The TPP140 thermal valve features a wax fixture designed to shrink as built up water heats up within your pump to limit overheating and to maximize your pump’s life.
✓Specifications: The RRV4G40HD-F24 is manufactured with a garden hose adapter inlet of 1/2”, and an outlet thread size of 3/8” F.

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10% Discount

Biswing Pressure Washer Pump, 1" Shaft Horizontal Triplex Plunger, 4400 PSI Max, 4 GPM, Direct Drive Pump with Adjustment Unloader, Replacement Pumps for Cold Water Gas Power Pressure Washer

Biswing Pressure Washer Pump, 1" Shaft Horizontal Triplex Plunger, 4400 PSI Max, 4 GPM, Direct Drive Pump with Adjustment Unloader, Replacement Pumps for Cold Water Gas Power Pressure Washer

✓POWERFUL PRESSURE WASHER PUMP: With a working pressure rating of 2900-4400 PSI and flow rate of 4 GPM, fit most engines with 9-15 HP(270-340cc), our pressure washing pump delivers exceptional performance, fits most horizontal 1" shaft gas-powered pressure washers. (ONLY Fit 1'' Shaft Horizontal Engines). Constructed with one-piece brass pump head, this replacement pump ensures consistent and forceful water pressure
✓COMPATIBILITY: Our pressure washer pump features a 3/4'' NH garden hose inlet and 3/8" quick connect high pressure hose outlet, compatible with various gas pressure washers with horizontal engines- compatible with Honda: GX270, GX340, GX390; Simpson MorFlex: 40224, 40225, 40226, 41182, 90034, 90039; AR: RG 2125HN, RG 1528HN, SLPHP4040-402, RSV4G40-PKG, RSV4G40HD-F40EZ; General Pump: EZ4040G, EZ4040, TS2021, WS202; OTHERS: COMET RW 4040 S, Mi-T-M 3-0308
✓ADJUSTABLE POWER UNLOADER: Come with an unloader can be easily adjusted by twisting the unloader valve to let pressure output to the great performance with your engine and great cleaning efficient for your workshop. When you need the engine to switch to idle mode, just lower the pressure to reduce the noise and relax for a while
✓CHANGE OIL IN TIME: The sight glass and advanced oil seal technology eliminates the need for a dipstick, you can know oil levels are low or if water has clouded the oil through sight glass, very easy to change the oil in time. Tips- The pump does NOT contain pre-filled oil, please add oil before use. The oil should be changed about EVERY 60 hours of operation
✓PACKAGE INCLUDE: 1x Power Washer Replacement Pump, 1 x Detergent Hose, 1 x Vent Plug, 1 x Shaft Key (6.3 x 6 x 54), 4 x Bolts (UNC3/8-16 x 1-1/2), 4 x D10 Spring Washers, 4 x D10 Flat Pads, 21 x O-rings. Notes- In order to protect the spring, the pressure is not set to the maximum value at the factory, please adjust the pressure with the regulator. Only suitable for COLD WATER use

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TOOLCY Pressure Washer Pump 3600-4000 PSI Max, 4 GPM Triplex Plunger Pressure Pump, Horizontal 1 inch Shaft Gas Power Washer Pump with Pressure Adjustment Unloader, Direct Drive

TOOLCY Pressure Washer Pump 3600-4000 PSI Max, 4 GPM Triplex Plunger Pressure Pump, Horizontal 1 inch Shaft Gas Power Washer Pump with Pressure Adjustment Unloader, Direct Drive

✓[Renew Your Gas Pressure Washer] - Quality triplex pressure washer pump with big save. Designed for horizontal engine and relife your power washer with Max 4000 PSI and 4 GPM, recommend working pressure 3400PSI @ 3400RPM for longer life. Service your residential and light commercial pressure washing for driveway, decks, fences, sidewalks, vehicles, and more
✓[OEM Quality Power Washer Pump] - Fully anodized black crankcase with solid brass pump head can greatly improve the strength and improve the service life. The triplex design can make the pump run more smoothly, powerful and durable. Sight glass and advanced oil seal technology eliminates the need for a dipstick
✓[Adjustable Unloader] - This pump come with unloader could adjust your pressure output with best perfomance with your engine and best cleaning efficient for your workshop. Also could reduce pressure when you need engine switch to idle model for low noise and relax for a while
✓[Easy Set Up] - Pump flange comply with industry SAE standard mounting dimension, 1" shaft hole. Diagonal distance between holes is 6 1/2''. Distance between short side holes is 3 1/4''. Distance between long side holes is 4 1/2''. Come with 3/4" garden hose inlet and 3/8" quick connect output for easy set up and renew your power washer. Fit most engine with 9-15HP or 270-420cc, test performance and replacement pump for Honda engine such as GX340 GX390 GX270, Briggs&Strattton, Simpson
✓[Tips] - The sight glass helps you check the oil level easily, you can know oil levels are low or if water has clouded the oil. We recommend you to change oil every 60 hours running time. Note: This pressure washer pump only for COLD WATER use
✓[COMPATIBILITY]: Compatible with►Honda: GX340, GX390, GX270►Simpson:Simpson Armor 41114, 41096, 41115 or Simpson Monster 41113, 41028, 41030, 41032, 41034 ►AAA: 90039, 90038, 90034, DW3635 ►AR: RKV3G27, RKV3G34, RKV4G36, RSV4G40, RKV3G39, RRV4G40HD, RG 2125HN, RG 1528HN, SLPHP4040-402►CAT: 66DX40GG1, 66DX35G1I►OTHERS: 3-0308, 3-0350, EXHP3640, EZ4040G, EZ4040, TS2021, WS202, DXPW3035, DXPW3535, DXPW4035 and more.

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TOOLCY Pressure Washer Pump Max 4000 PSI 4.2 GPM, 1" Shaft Horizontal Gas Power Washer Pump Replacement, Direct Drive Triplex Plunger Replacement Pump with Pressure Adjustment Unloader, 5 Nozzle Tips

TOOLCY Pressure Washer Pump Max 4000 PSI 4.2 GPM, 1" Shaft Horizontal Gas Power Washer Pump Replacement, Direct Drive Triplex Plunger Replacement Pump with Pressure Adjustment Unloader, 5 Nozzle Tips

✓[ Renew Your Gas Pressure Washer ] - Quality triplex pressure washer pump with big save. Designed for horizontal engine and relife your power washer with Max 4000 PSI and 4.2GPM, recommend working pressure 3400PSI@3400RPM for longer life. Service your residential and light commercial pressure washing for driveway, decks, fences, sidewalks, vehicles, and more
✓[ OEM Quality Power Washer Pump ] - Fully anodized black crankcase with solid brass pump head can greatly improve the strength and improve the service life. The triplex design can make the pump run more smoothly, powerful and durable. Sight glass and advanced oil seal technology eliminates the need for a dipstick
✓[ Adjustable Unloader ] - This pump come with unloader could adjust your pressure output with best perfomance with your engine and best cleaning efficient for your workshop. Also could reduce pressure when you need engine switch to idle model for low noise and relax for a while
✓[ Easy Set Up ] - Pump flange comply with industry standard SAE mounting dimension, 1" shaft hole. Diagonal distance between holes is 6 1/2''. Distance between short side holes is 3 1/4''. Distance between long side holes is 4 1/2''. Comes with 3/4" garden hose inlet and 3/8" quick connect outlet for easy setup, renew your power washer. Fit most engine with 9-15HP or 270-340cc, test performance and great pump replacement for Honda GX340 GX390 GX270, Briggs&Strattton, Simpson and so on
✓[ Oil Pre-filled ] - The sight glass helps you check the oil level easily, you can know oil levels are low or if water has clouded the oil. We recommend you to change oil every 60 hours running time. Note: This pressure washer pump only for COLD WATER use

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MUTURQ 1" Shaft Horizontal Triplex Pressure Washer Pump, Replacement Pump Compatible with Simpson 90034 90039 41113 41028 41030 41115 General pump TS2021 EZ4040G RSV4G40-PKG, Max 4000 PSI & 4.6 GPM

MUTURQ 1" Shaft Horizontal Triplex Pressure Washer Pump, Replacement Pump Compatible with Simpson 90034 90039 41113 41028 41030 41115 General pump TS2021 EZ4040G RSV4G40-PKG, Max 4000 PSI & 4.6 GPM

✓PREMIUM QUALITY: Support 4000 PSI / 4.6 GPM horizontal 1" shaft pressure washer pump. Fits most engines with 9-15 HP, easily handles residential and light commercial use. Manufactured from forged brass for superior corrosion resistance, better sealing, high strength. Impressive working time of up to 500 hours.
✓EASY INSTALLATION: Includes mounting bolts, shaft key, 5 color nozzle tips, 3/8" plug to M22-14mm male adapter, and pre-sealed components—get your pressure washer running again in just 10 minutes! Features a threaded 3/8" socket pressure washer hose outlet and a 3/4" NH garden hose inlet. The standard bolt pattern fits most horizontal 1" shaft gas-powered pressure washers. (Fits 1" shaft horizontal engines ONLY.)
✓EASY OIL CHANGE: Convenient oil change via the oil inlet. Check oil levels effortlessly with the built-in sight glass—no dipstick required! The clear visibility lets you monitor oil levels and detect contamination (e.g., water clouding) quickly.
✓ADJUSTABLE UNLOADER: Easily adjust pressure by hand—no wrench needed! Uncontrolled high pressure can cause sudden spikes, potentially damaging surfaces. For professional cleaning and simplified operation, adjust the unloader valve as needed.
✓COMPATIBILITY: Compatible with ▲Simpson MorFlex :90034, 90039, 40224, 40225, 40226,41182▲Honda GX340,GX390,GX270▲AR: RSV4G40-PKG,RSV4G40HD-F40EZ,RG 2125HN,RG 1528HN,SLPHP4040-402▲General pump:TS2021, EZ4040G,EZ4040,WS202▲COMET RW 4040 S▲MiTM 3-0308▲DeWalt: DXPW4035. Please feel free to message MUTURQ for any technical and afterserivce help.

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