Best Gas Pressure Washer Pumps of 2026

Bryan Hicks Avatar
Bryan Hicks
Last Updated: Jan 16, 2026

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Gas pressure washer pumps are an essential component of any high-powered cleaning system. These pumps use a gasoline-powered engine to generate high-pressure water flow, which is then directed through a nozzle to blast away dirt, grime, and other debris. They are particularly useful for heavy-duty cleaning tasks, such as removing oil stains from driveways and patios, or cleaning large commercial or industrial spaces. Gas pressure washer pumps come in a variety of sizes and configurations, with different levels of power and performance to suit various cleaning needs. They are a reliable and efficient way to get any cleaning job done quickly and effectively.

At a Glance: Our Top Picks

OEM Technologies 90028 Pressure Washer Pump Kit Cover #TOP 1
OEM Technologies 90028 Pressure Washer Pump Kit
ftb score rating icon 9.8
TOOLCY 3/4" Shaft Horizontal Pressure Washer Pump Cover #TOP 2
TOOLCY 3/4" Shaft Horizontal Pressure Washer Pump
ftb score rating icon 9.7
TOOLCY 7/8" Shaft Vertical Pressure Washer Pump Cover #TOP 3
TOOLCY 7/8" Shaft Vertical Pressure Washer Pump
ftb score rating icon 9.5

Top 10 Gas Pressure Washer Pumps

OEM Technologies 90028 Pressure Washer Pump Kit

90028
Silver
3000 psi
OEM Technologies 90028 Pressure Washer Pump Kit Cover
OEM Technologies 3300 PSI 2.4 GPM Replacement Pressure Washer Pump Kit, Horizontal Axial Cam Replacement Pump for Gas Pressure Washer, 3/4" Shaft, Includes Hardware and Siphon Tube (90028)

The OEM Technologies 90028 Pressure Washer Pump Kit is an easy-to-install kit that can save money by replacing the pump instead of buying a whole new power washer. It can support 3300 PSI at 2.4 GPM to wash walls, fences, sidewalks, and vehicles. The kit includes a siphon tube with filter, mounting bolts, shaft key, and instruction booklet to ensure compatibility with most* gas-powered pressure washers. The pump features a maintenance-free crankcase, fully anodized die-cast aluminum construction, and a Thermal Relief Valve (TRV) to protect the pump from overheating while in bypass mode.

What We Like
Easy installation process
Perfect motor compatibility
Restores washer performance
Noticeable pressure boost
Cost-effective replacement

TOOLCY 3/4" Shaft Horizontal Pressure Washer Pump

TOOLCY
Grey
TOOLCY 3/4" Shaft Horizontal Pressure Washer Pump Cover
TOOLCY 3/4" Shaft Horizontal Pressure Washer Pump, 2600-3300 PSI @ 2.5 GPM - Power Washer Pump for Gas Washer - Compatible with Honda, Simpson, Ryobi and More

The TOOLCY 3/4" Shaft Horizontal Pressure Washer Pump is a high-quality and efficient pump that can replace pumps from various brands. It has a maximum pressure of 3100 PSI at 2.5 GPM and comes with 3 nozzle tips for best cleaning performance. Made of die-cast aluminum with deep surface treatment, this pump is rust-resistant and maintenance-free. It is easy to start and can be set up in 5-10 minutes. The pump is also compatible with various pressure washer models from brands like Honda, Simpson, and Karcher.

What We Like
Powerful water pressure
Durable construction
Easy installation
Wide compatibility
Smooth, quiet operation
#TOP 3

TOOLCY 7/8" Shaft Vertical Pressure Washer Pump

AP01-29A23V
Gray
TOOLCY 7/8" Shaft Vertical Pressure Washer Pump Cover
TOOLCY 7/8" Shaft Vertical Pressure Washer Pump - Rear Inlet/Outlet Max 3100 PSI @ 2.5 GPM OEM & Power Washer Pump for Gas Washer, More Replacement for Simpson, Ryobi, Honda etc

Restart and upgrade your pressure cleaner with TOOLCY 7/8" Shaft Vertical Pressure Washer Pump. It features a high-performance double seal system that prevents leakage, upgraded technical surfacing piston and bearing, and a thermal relief valve that protects the pump from overheating. The pump is easy to set up in 5-10 minutes with the key provided and comes with three special test-matched nozzles. It is also maintenance-free with pre-filled oil and double seal system. Compatible with many brands including Ryobi, Honda, PowerStroke, and Simpson.

What We Like
Easy installation process
Improved water pressure
Good value for money
Fits multiple washer models
Durable construction
#TOP 4

Hourleey Horizontal Pressure Washer Pump

Pressure Pump
Silver
Hourleey Horizontal Pressure Washer Pump Cover
Hourleey 3/4" Shaft Horizontal Pressure Washer Pump, 3400PSI 2.5GPM, Replacement Pump for Power Washer, Power Washer Pump for Gas Washer, Compatible with Simpson, Ryobi, Honda

The Hourleey Pressure Washer Pump is an excellent choice for rejuvenating your power washer, supporting up to 3400 PSI and 2.5 GPM. Its universal compatibility means it fits various gas-powered washers seamlessly, making replacement simple and efficient. You’ll appreciate the easy installation process, which allows you to set up your pump quickly without needing to release pressure first. Plus, this pump is designed to be maintenance-free, arriving pre-filled with oil and featuring a double seal system to prevent leaks. Enjoy a reliable and hassle-free cleaning experience with this durable pump.

What We Like
Easy installation process
Good value for price
Solid build quality
Compatible with various models
Strong pressure performance
#TOP 5

YAMATIC 3/4" Shaft Pressure Washer Pump - 3000 PSI @ 2.5 GPM

10P2923HA
Silver
2.5GPM
YAMATIC 3/4" Shaft Pressure Washer Pump - 3000 PSI @ 2.5 GPM Cover
YAMATIC 3/4" Shaft Horizontal Pressure Washer Pump 3400 PSI 2.5 GPM Replacement Pump for Power Washer Compatible with Homelite, Troybilt, Simpson, Karcher, Honda GC160 GC190, AR RMV 2.5G30

The YAMATIC 3/4" Shaft Pressure Washer Pump is designed for powerful residential cleaning jobs with improved 3000 PSI X 2.5 GPM performance. Its double seal system and upgraded piston and bearing offer extended durability, with a thermal relief valve to prevent overheating. The adjustable unloader allows for better engine compatibility, while the Easy-Start structure and pre-filled gasoline make setup and use effortless. It is compatible with most brand gas power washers with a 3/4" Shaft Horizontal pump.

What We Like
Easy installation process
Strong and consistent pressure
Good value for replacement
Durable build quality
Fits multiple washer models
#TOP 6

YAMATIC 7/8" Shaft Vertical Pressure Washer Pump 3000 PSI @ 2.5 GPM Replacement Pump

10P2923VA
Silver
3000 PSI
YAMATIC 7/8" Shaft Vertical Pressure Washer Pump 3000 PSI @ 2.5 GPM Replacement Pump Cover
YAMATIC 7/8" Shaft Vertical Pressure Washer Pump Rear Inlet/Outlet 3000 PSI @ 2.5 GPM Replacement Pump for Power Washers, Compatible with 308653045, 308653052, 308653078, GCV190 and more

Upgrade your power washer with the YAMATIC Pressure Washer Pump. This pump is a replacement for most Rear Outlet 180-196cc at 6.5-7hp engine RYOBI, Honda, Briggs and Stratton, Subaru, PowerStroke, Craftsman, Simpson, Homelite and many other brands. With a maximum pressure of 3000 PSI and a flow rate of 2.5 GPM, this pump is perfect for washing walls, fences, sidewalks, vehicles and more. The double seal system prevents leakage and the thermal relief valve (TRV) protects the pump from overheating. The adjustable unloader allows you to increase or reduce the pressure to fit the engine's requirement better. The maintenance-free crankcase eliminates the hassle of changing gasoline. With easy start built-in, cold starts are simple and quick, and the kit includes a siphon tube with filter, mounting bolts, shaft key, and instruction booklet to get your machine back in action as quickly as possible.

What We Like
Easy installation
Good value for price
Strong water pressure
Well-made construction
Fits multiple washer brands
#TOP 7

WOJET 3400PSI 2.5GPM Pressure Washer Pump

PA3023
Sliver
WOJET 3400PSI 2.5GPM Pressure Washer Pump Cover
WOJET Pressure Washer Pump, 3/4" Shaft, 3400PSI 2.5GPM, Horizontal Power Washer Pump With Anti-seize, Self-Priming, Replacement Pressure Washer Pump Kit for Dewalt, Simpson, Craftsman, Honda, Generac

The WOJET Pressure Washer Pump is a versatile and convenient upgrade for your pressure washer. It fits many popular engine models, so you can easily replace your old pump without worry. This pump delivers strong cleaning power with 3400 PSI pressure and 2.5 GPM flow, perfect for everyday tasks like washing cars or cleaning driveways. Its handy pressure control lets you adjust the pressure by hand, so you can switch between gentle and tough cleaning jobs quickly. Plus, the self-priming feature allows you to draw water from buckets or tanks, giving you flexibility to work even where water sources are limited.

What We Like
Easy installation process
High pressure performance
Responsive customer service
Durable build quality
Convenient oil window
#TOP 8

OEM Technologies 90029 Pressure Washer Pump Kit

90029
Gray
3400 PSI
OEM Technologies 90029 Pressure Washer Pump Kit Cover
OEM Technologies 90029 Replacement Pressure Washer Pump Kit, 3400 PSI, 2.5 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Residential and Industrial Gas Powered Machines

The OEM Technologies 90029 Replacement Pressure Washer Pump Kit is an easy-to-install kit that is designed to extend the life of your pressure washer. It is perfect for power washers capable of supporting 3400 PSI at 2.5 GPM and is ideal for washing walls, fences, sidewalks, vehicles, and more. The pump features a maintenance-free crankcase and is manufactured from fully anodized die-cast aluminum for protection against corrosion. The kit includes a siphon tube with filter, mounting bolts, shaft key, and instruction booklet. A Thermal Relief Valve (TRV) protects the pump from overheating while in bypass mode to extend pump life.

What We Like
Easy installation
High power output
Durable performance
Compatible with various models
No oil changes required
#TOP 9

Biswing 3400 PSI Horizontal Axial Plunger Pump

Silver
Biswing 3400 PSI Horizontal Axial Plunger Pump Cover
Biswing Pressure Washer Pump, 3/4" Shaft Horizontal Axial Plunger, 3400 PSI Max, 2.5 GPM, Replacement Pumps for Cold Water Gas Power Pressure Washer

The Biswing Pressure Washer Pump offers powerful cleaning with a maximum pressure of 3400 PSI and a flow rate of 2.5 GPM, making it ideal for engines between 6.5-7 HP. This pump fits most horizontal 3/4" shaft gas-powered washers, so you can easily replace your old one without hassle. It’s built with durable aluminum alloy, ensuring long-lasting use and strong water pressure for tough cleaning jobs. Plus, a built-in thermal relief valve protects the pump from overheating, giving you peace of mind during extended use. Connecting is simple with standard 3/4" NH garden hose and M22 threaded outlets, though adapters may be needed for some hoses.

What We Like
High pressure and flow rate
Wide compatibility
Durable aluminum body
Overheat protection valve
Easy hose connection
#TOP 10

TOOLCY 4000 PSI Pressure Washer Pump

4000 PSI Max
Black
TOOLCY 4000 PSI Pressure Washer Pump Cover
TOOLCY Pressure Washer Pump Max 4400 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

The TOOLCY Pressure Washer Pump is designed to enhance your gas pressure washer's performance. With a maximum output of 4000 PSI and 4.2 GPM, it’s perfect for various cleaning tasks around your home or light commercial spaces. The durable triplex design ensures smooth operation and longevity, while the adjustable unloader allows you to easily modify pressure levels for optimal cleaning efficiency. Plus, it features an easy setup with standardized mounting dimensions, making it a convenient replacement for many engine models.

What We Like
High pressure and flow rate
Durable triplex design
Adjustable pressure output
Easy installation
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a good PSI for a gas pressure washer?

A good PSI range for a gas pressure washer depends on the task. For heavier residential tasks, a moderate strength unit with 2,000 - 2,900 PSI is suitable. Professional pressure washers and contractors typically use high-pressure models with 3,000 - 6,900 PSI for more demanding jobs.

2. How do I choose a replacement pressure washer pump?

To choose a replacement pressure washer pump, you need to match the PSI (pressure rating) and GPM (gallons per minute) of your old pump with those of an available replacement. It's important not to go for a pump with significantly higher PSI, as it can strain the engine or exceed the burst rating of your hose.

3. How can you tell if your pressure washer pump is bad?

Signs of a bad pressure washer pump include water leaks, oil leaks, inconsistent pressure, low pressure, and loud noises. If there is a crack in the pump causing water leakage, the entire pump needs to be replaced. Oil leaks may indicate damaged seals, gaskets, or pistons. Inconsistent or low pressure and loud noises are also indicators of a faulty pump.

4. Which is better axial or triplex pump for pressure washer?

Axial cam pumps are direct drive and offer high pressure and performance, but they tend to wear down faster. Triplex plunger pumps, on the other hand, are of higher quality and provide longer life and better performance. For superior durability and performance, a triplex pump is recommended.

5. Is a pressure washer better than a higher PSI or GPM?

The preference between higher PSI (pressure) or GPM (gallons per minute) depends on the application. Contractors or professional cleaners often prefer a higher GPM machine over PSI because they use cleaning solutions to loosen grime, making rinsing the dirt away the primary task. Higher GPM allows for faster cleaning of large surfaces.

6. Will 2000 PSI clean concrete?

A medium-duty pressure washer with 2000-2800 PSI is suitable for cleaning concrete, brick, and wood surfaces. It works effectively for cleaning patios, sidings, roofs, decks, fences, and other similar areas.

7. Is 2000 PSI too much to wash a car?

When washing a car, it is recommended to avoid using a pressure washer above 2,200 PSI. A pressure washer with 1,500 PSI is sufficient for a deep clean, and higher pressure won't make a noticeable difference in performance.

Editor's Notes

During our gas pressure washer pump research, we found 24 gas pressure washer pump products and shortlisted 10 quality products. We collected and analyzed 54,452 customer reviews through our big data system to write the gas pressure washer pumps list. We found that most customers choose gas pressure washer pumps with an average price of $98.69.

The gas pressure washer pumps are available for purchase. We have researched hundreds of brands and picked the top brands of gas pressure washer pumps, including SIMPSON, TOOLCY, Hourleey, YAMATIC, WOJET. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Bryan Hicks Avatar

Bryan Hicks is a professional gardener and a writer who lives in North Texas with his family and his dog. Bryan has spent more than half of his life surrounded by garden products. He has extensive experience in garden makeovers and maintenance and lawn care. His areas of expertise include outdoor decoration, gardening and garden design.