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Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM
Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM

Features & Details

  • High-Efficiency Cleaning Power: Our pressure washer pump delivers up to 4000 PSI of powerful water pressure with a maximum flow rate of 4.0 GPM, ensuring fast completion of tasks ranging from household cleaning to light industrial jobs. (Recommended working pressure: 3100 PSI for typical residential and light industrial cleaning and to extend pump life.)
  • Durable, Long-Lasting Design: Utilizing advanced anodizing technology, the parts washer pump’s surface forms a hard protective layer, significantly enhancing corrosion resistance and durability. Built to last, this pump provides reliable performance for up to 500 hours of continuous use.
  • Equipped with Pressure Regulator: Adjust pressure output precisely based on engine operation to achieve optimal performance for any cleaning task. Easily reduce pressure during short pauses to switch the engine to idle mode, reducing noise and extending equipment life for a more comfortable operating experience.
  • Broad Compatibility: Featuring a standard SAE bolt pattern, this power washer pump is compatible with various horizontal engine pressure washers, including Simpson MorFlex models 40224, 40225, 40226, and Santoprene model 41182. Match engine orientation, PSI, GPM, engine shaft diameter, and current pump inlet/outlet connections to ensure compatibility.
  • Easy Maintenance: An integrated oil sight glass lets you check oil levels without disassembling the unit, helping detect low oil or contamination promptly to keep the pump in peak condition. To extend lifespan and ensure continuous efficiency, we recommend changing the oil every 60 hours of operation. Note: This replacement pump for power washer is intended for use with cold water only.
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Reviews 4.7

All reviews are from verified purchases
Average rating based on 60 reviews
Top Reviews
Dustin Dustin
Reviewed on Jun 23,2024
Fits good on a John Deere 3800 pressure washer. Can't use the pump at full capacity. It is stronger than the motor.
Techjeff Techjeff
Reviewed on Jul 07,2025
Seems to be a good pump. I have about 3 hours of use on it with no complaints. So far, so good.
Thomas Thomas
Reviewed on Jul 07,2025
Extremely robust great performing pump I am running it on a Honda gx240 engine at the moment and the pump is more than that engine can put out but never the less with that engine a 100’ hose and a 5.5k turbo nozzle it still cuts through dirt and grime cleans concrete white again just a little slower. If mounted to a gx390 or equivalent it would be an absolute animal. But I am still thoroughly impressed and happy with this pump in the configuration I have it in I would totally recommend and buy it again my only recommendation if putting together your own pressure washer start our with a gx390 sized engine to get all the performance out of the pump a 240/ 270 engine will work and work pretty darn good your just leaving power on the table, with all that said this pump is freaking awesome 10 out of 10 would recommend and would buy again
Tony G Tony G
Reviewed on Jul 05,2025
The pump was delivered a few days later than promised, but the packaging was excellent. We replaced our Harbor Fright 4400psi/4.4gpm pump with this one and could tell immediately that the pressure was better than the original pump. We hope that the pump will provide the 500hrs it's advertised for, and continues to perform as well as it does now for the life of this pump. Good job Vevor, thanks to you, my 4400psi pressure washer is a beast again!
Wyatt Hutchens Wyatt Hutchens
Reviewed on Jul 02,2025
Put this pump on a 4400 psi 4gpm machine and it hasn’t let me down yet!
Perrydave Perrydave
Reviewed on Jun 15,2025
Very good pump so far. Direct replacement for a leaking axial cam pump on a 6 HP B&S engine. Easy bolt on and go. Smooth consistent pressure. Engine doesn't seem to work as hard as with the previous pump, but the pressure is just as good or better.
Heath Phillips Heath Phillips
Reviewed on May 23,2025
Great pump for the price
Jennifer Thurman Jennifer Thurman
Reviewed on May 08,2025
My husband has two pressure washers. One of them he has had for 20+ years. He was given another one . He bought pumps for both. Replaced them. And now he is in pressure washers bliss!! Pressure washer love!
Billy and Jennifer Billy and Jennifer
Reviewed on May 03,2025
Thank you so much for alll of the great things you have, my husband had 2 pressure washers that needed pumps on them you should have seen his face when he got both of them working, even bought a new gas tank for one We love VEVOR !
Works great Works great
Reviewed on Apr 18,2025
Installed 2yrs ago still running strong

About this item

Product specification
Item Model Number
QXB-8
Engine Orientation
Horizontal
Max/Recommended Pressure
4000/3100 PSI
Max Flow Rate
4.0 GPM
Inlet Connector
3/4" NH Garden Hose
Outlet Connector
3/8" Quick Connect
Shaft Diameter
φ1"/25.4 mm
Primary Material
Copper, Aluminum
Compatible Engine Power
13-15 HP
Net Weight
18.63 lbs/8.45 kg
Description
1 Inch Shaft Horizontal Triplex Plunger High Pressure Washer Pump
This upgraded parts washer pump triplex plunger offers a more stable and powerful pressure output compared to traditional single- or double-plunger pumps. Each pump stroke provides consistent output, reducing pressure fluctuations for more efficient and effective cleaning.
The simplified start-up process and improved safety features make operation more comfortable and secure. Our power washer pump allows you to focus on the task at hand, boosting productivity and satisfaction.
The oil sight glass not only shows oil levels but also allows you to monitor oil color and clarity. If oil appears cloudy, discolored, or contains contaminants, it’s an indicator that the oil may need replacement for optimal lubrication.
This replacement pump for power washer comes with a complete set of installation hardware, allowing for quick and easy replacement of the original pump, giving your pressure washer new life.
Ideal for high-frequency, demanding environments, the performance advantages of this replacement power washer pump ensure higher productivity and reduced downtime. With exceptional durability and low failure rates, this pump offers long-term users lower maintenance, making it a smarter choice.

Questions and Answers (1)

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Will this pump work on a 9hp pressure washer?
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It cannot work on a 9hp pressure washer.
By vevor on

Pressure Washer Pump 1 in Shaft Horizontal Triplex Plunger 4000 PSI 4.0GPM

4.7 60 Reviews
$ 185 99

1 inch

  • 1 inch
  • 3/4 inch

4000 psi

  • 4400 PSI
  • 3500 psi
  • 4300PSI
  • 4200PSI
  • 4000 psi
  • 3700 PSI

4 GPM

  • 4 GPM
  • 2,5 GPM
  • 4.4GPM
  • 4.2GPM
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