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The Definitive Guide of Best Pressure Washer Pumps – Three Pump Types Explained!

Fact Checked By Daniel Wood | Post Updated On: April 29, 2023

If you use a pressure washer but don’t know which pump suits your machine, let the following 7 best pressure washer pumps give you some exciting ideas!

There are different types of pumps for pressure washers available in the market. Different companies use different pumps, and the pump varies from machine to machine. You would be able to choose the right pressure washer pump that will match your machine by reading this article.

Mainly we can divide the pressure washer pumps into three groups, Wobble Plate Pump, Axial Cam Pump, and Triplex Plunger pump. In many places, you will see that pumps are divided into two types where the wobble pump is excluded. In this article, you will learn about the top-listed pressure washer pumps, the working procedures of different pumps, and their benefits and drawbacks.

What are the Best Pressure Washer Pumps?

  1. Best and Recommended by Editor: AR ANNOVI REVERBERI Triplex Pump
  2. Best Choice: Simpson Cleaning 90029 Axial Cam Pump
  3. Best for Gas-Powered: AR North America SRMW22G26EZ Axial Pump
  4. Best for Budget: UNIVERSAL 3000 PSI PUMP
  5. Best for Overall: Homelite Vertical 308653045 308653052 Pump
  6. Best for Vertical Engines: Universal Power Washer Water Pump
  7. Best for Heavy Cleaning: Himore 309515003 Pump

Top Rated Best Pump for Pressure Washer


  • Model: RMW22G24-EZ
  • PSI: 2400
  • GPM: 2.0 Gallons
  • Weight: 1 Pounds
  • Type: Triplex Plunger
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Simpson Cleaning 90029 Axial Cam PumpSimpson Cleaning 90029 Axial Cam Pump

  • Model: 90029
  • PSI: 3100
  • GPM: 2.5 Gallons
  • Weight: 6 Pounds
  • Type: Axial Cam
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AR North America SRMW22G26EZ Axial PumpAR North America SRMW22G26EZ Axial Pump

  • Model: SRMW22G26-EZ
  • PSI: 2600
  • GPM: 2.2 Gallons
  • Weight: 6.05 Pounds
  • Type: Triplex Plunger
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  • Model: 309515003
  • PSI: 3000
  • GPM: 2.5 Gallons
  • Weight: 7.11 Pounds
  • Type: Horizontal Brass Head
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Homelite Vertical 308653045 308653052 PumpHomelite Vertical 308653045 308653052 Pump

  • Model: 308653006
  • PSI: 2500
  • GPM: 2.3 Gallons
  • Weight: 0.25 Pounds
  • Type: Axial Cam
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Universal Power Washer Water PumpUniversal Power Washer Water Pump

  • Model: 308653052
  • PSI: 2800
  • GPM: 2.3 Gallons
  • Weight: 6 Pounds
  • Type: Axial Cam
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Himore 309515003 PumpHimore 309515003 Pump

  • Model: 309515003
  • PSI: 3000
  • GPM: 2.5 Gallons
  • Weight: 7.69 Pounds
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General Types: Positive displacement pumps have two general groups. The groups reciprocate pumps using pistons and plungers and rotary pumps using screws, gears, and vanes. There are two main differences between these two types of pumps.

The first one is that the piston pump has the cylinder seal attached to the piston, and the plunger pump has the cylinder seal at the stationary point. The second one is that the piston pump is driven by a drive shaft, and the plunger pump is driven by a crankshaft.

The Three Pressure Washer Pump Types

For better understanding, the companies divide the pressure washer pumps into three categories: Wobble Pump, Axial Cam Pump, and Triplex Plunger pump.

pressure washer pumps

Wobble Pump

This type of pump uses a wobble plate that is connected to the drive shaft that pushes the piston back and forth. The piston sucks in the water and pushes it out with great force.

This pump is only 70% efficient because it needs to push against the water and the spring. These pumps are sealed shut before they come out from the factory and are used in low PSI (below 2500) and low GPM (below 2.0) machines.

  • This pump can run dry, produce high pressure, and self-priming.
  • If any of the parts of this pump gets spoilt, then you cannot repair it; you have to replace it. They are not as efficient as the other pumps.

Axial Cam Pump

This pump can work at higher PSI and higher GPM. This intermediate-level pump will offer you many advantages over the wobble pump. In this pump, the pistons rotate around the swash plate, which is slightly different from a wobble pump.

The swash plate strokes the piston, and the pistons suck up water from one side and push it out on the other side. This operation rotates about the same axis as the drive shaft directly connected.

The lifespan of this pump is around 500 – 800 hours which is slightly better to wobble pumps. This kind of pump is used in most machines that fall under 3500 PSI.

There are two versions of this pump which are fixed and variable. In the variable version, you can adjust the angle of the swash plate.

  • This pump has a longer life and is more efficient than the wobble pump. You can adjust the water flow if you adjust the swash plate angle.
  • This pump becomes very hot while working and takes time to cool down. This pump can cause excess vibration if it is not correctly balanced.

Triplex Plunger Pump

This kind of pump is very strong that can run for thousands of hours without maintenance. They can tolerate very high water pressure and are used in most professional-level machines. Like a car engine, the pistons drive on positive action to suck in water and push the water out with each stroke.

This pump is around 90% efficient, and because they run at less RPM than the engine, they run cooler. In this pump, you can replace and repair most of its parts.

Depending on your maintenance, this machine gives you service. The maintenance of this machine is economical. Most of the machines that serve over 3000 PSI water use this pump.

  • These pumps are very efficient that are less prone to leaks with very high-pressure tolerance. Because of its running speed, it remains cool and increases pump life.
  • The prices are high for this kind of pump.

7 Best Pressure Washer Pumps – Top Models Reviewed

Among many options, it often becomes a hassle to find out one specific thing when you don’t have any clue about it. If you get a list of the particular things, your work is cut down by at least half. We will try to make your search for the power washer pump easy and comfortable. You can easily select your appropriate product from the list we provided here. You’ll also learn details about these products, their benefits, and their drawbacks. Sitting in one place, you can easily make your decision. All the pumps here are top-rated products that are very popular among their users.

The Best Pressure Washer Pump of 2022

Best and Recommended by Editor: AR ANNOVI REVERBERI Triplex Pump

Cheap and best, perfectly match with this machine. It can be your best option when you have a little low budget and need a pump for your pressure washer.  Though AR North America Vertical Axial Radial Pressure Washer Pump is not the cheapest product, its performance is better than the others of this type. It’s easy to install on your machine, and it provides long-term service. Its pistons are made with hardened and tempered steel that ensures the smooth running of this part. Because of its lightweight, it becomes easy to carry.

Attractive Features:

The important features of this product are given below:

  • 2400 PSI water pressure
  • 2 GPM water flow
  • It mounts directly onto the engine shaft by using a keyed hollow shaft connection system
  • 3-piston alternating volumetric pump
  • It has a downstream chemical injection system
  • There is a built-in pressure control valve
  • It is for vertical gas engine-driven unit
  • It conveniently connects to most 7/8” diameter shaft
  • It fits most OEM carts easily.

Pros: The good qualities of AR North America Vertical Axial Radial Pressure Washer Pump are:

  • It perfectly matches most OEM carts
  • For residential usage it is perfect
  • Its weight is not much which makes the machine light
  • There is thermal relief protection for controlling heat
  • Its pressure control valve prevents any kind of misshapen
  • You don’t have to pay much to buy this part

Cons: Its bad sides are:

  • For heavy-duty cleaning, you might not be able to use it.
  • Sometimes, the 5/8″ axle interferes with the pump hose connections.

Considering all its good and bad sides, you can easily depend on this machine. To clean residential kinds of stuff, this pump will provide perfect water pressure. If it matches your pressure washer, it will be easier for you to install. You yourself can quickly solve its minor problems. This pump is protected from overheating. Investing in this product will be a good option. With all the excellent user ratings, you can add this pump to the best triplex pressure washer pump lists, which is also recommended by the editor.

Other Top Picks of Best Pump for Pressure Washer – 2022 Lists!

Best Choice: Simpson Cleaning 90029 Axial Cam Pump

This is an Axial Cam pump that is quite powerful and user-friendly. For residential usage, you can easily depend on it. The company Simpson certifies its working ability and durability. Many of the pumps in the market get overheated if you use them longer. SIMPSON Cleaning 90029 Axial Cam Horizontal Pressure Washer Replacement Pump’s thermal relief prevents its overheating so that you can work for a more extended period of time without any obstacles. this pump prevents contamination and water leaking.

Attractive Features:

The features of this pump are attractive, and the information here will help you know about it.

  • This is a direct drive horizontal axial pump
  • It provides 3100 PSI water pressure and 2.5 GPM water flow
  • Designed with a gas engine flange and 3/4” hollow shaft
  • It comes pre-filled with pump oil and thermal relief protection
  • You will get an M22 outlet for easy connection
  • It is made of cast aluminum for corrosion protection
  • It is an OEM pump technology

Pros: There are plenty of good sides SIMPSON Cleaning 90029 Axial Cam Horizontal Pressure Washer Replacement Pump has.

  • Its thermal relief protection prevents overheating
  • M22 outlet provides an easy connection
  • Corrosion proof extends the longevity
  • It is sealed to prevent contamination and lube failure
  • It has the power-boost technology to enhance performance

Cons: It has got some bad sides as well.

  • You can’t use it for commercial machine
  • It might cost you a little more than many others.

Though you will pay more than usual, it will be a good investment. According to the users’ reviews, this machine works for many years without causing any trouble. Before buying, you must find out whether this pump fits your machine. For your machine’s smooth running and for making your cleaning work easier, this will be a good option.

Best for Gas-Powered: AR North America SRMW22G26EZ Axial Pump

Annovi Reverberi is a well-known brand in making pressure washers. They have an expert team who make world-class pumps and machines. This is the reason they are a famous brand in the world. AR North America 2600 PSI Vertical Axial Radial Pressure Washer Pump is one of their best inventions. This pump is robust, durable, and provides very high performance. This is a vertical axial pressure washer pump that provides outstanding performance. Its weight is considerably lower compared to most of the pumps in the market. The pump is the best compatible with the gas-powered pressure washer.

best pressure washer pump

Attractive Features:

Let’s see what this pump has got.

  • You will get 2600 PSI water pressure
  • Its water flow rate is 2.2 GPM
  • This pump weighs only 5.3 pounds
  • The inlet and outlet come out through the back of the engine
  • There is an oil-lubricated chemical injector
  • It has a thermal relief valve
  • Its hose connection measurement is 12mm x 14mm

Pros: AR North America 2600 PSI Vertical Axial Radial Pressure Washer Pump will provide you with the following benefits:

  • For residential stuff, you will get sufficient power
  • Its water flow rate is perfect
  • It’ll not be heated easily
  • You can easily inject an oil-lubricated chemical
  • It will not make your machine heavy
  • It fits most of the brands
  • Its installation is quite easy

Cons: The bad sides are:

  • If your present pump’s outlet tubes face the same direction, you might have to order the standard version, which is 2G26-EZ.
  • This pump might not work if you have many heavy-duty cleaning jobs.

The price of this pump is comparatively less than most of the pumps in the market. Your investment will be protected by its given warranty. If you don’t have any heavy-duty cleaning tasks, why should you waste on buying an expensive pump which will not be under-used? You can easily depend on this brand based on its fame.

Best for Budget: UNIVERSAL 3000 PSI PUMP

UNIVERSAL 3000 PSI pressure washer water pump is specially made for Honda, Generac, and many other products. You will have a great experience with this pump as it is smooth, easy to connect, and provides excellent performance. You will get 3000 PSI water pressure which is quite enough for the regularly used residential stuff such as vehicles, patios, fences, floors, roofs, etc. You will get a 1-year warranty for your investment safety. Before you buy this product, check its OEM number to match your machine.

Attractive Features: 

  • It provides a water pressure of 3000 PSI
  • You will get a maximum of 2.5 GPM water flow
  • This is a horizontal brass head pump
  • Its weight is 6.5 pounds
  • Compatible with Honda and Generac machines
  • Easy connect facilities.

Pros: If you buy a UNIVERSAL 3000 PSI pressure washer water pump, you will get the following benefits:

  • Powerful and durable pump
  • You yourself can connect it to your machine
  • It will not make your machine heavy
  • You will get one year warranty
  • It matches with many pressure washers
  • Its price is not much
  • It is an ideal pump for residential machines.

Cons: The bad sides of this product are:

  • If not installed properly, you might have a problem with your pressure hose
  • There are other cheaper pumps available, though their quality is better.

Investing your money in this pump will be a wise decision. You don’t have to regret it. All the users who bought this part provided a very good review, and it assures its better quality. Before buying, don’t forget to match its OEM number for a perfect connection.

Best for Overall: Homelite Vertical 308653045 308653052 Pump

This is the Homelite’s product that has won its users’ hearts. There are plenty of experts who believe that the Homelite Vertical Pressure Washer Pump is one of the best options for replacing your old pump. You might keep this pump on your buying list and choose if it fits your machine. This is one of the cheapest machines available in the market. It might be cheap, but its performance and durability will make you forget the price. Investing your money in this pump will benefit you.

Attractive Features:

For consideration, you might want to know its specifications.

  • This pump will provide you with 2700 PSI water pressure
  • It will provide you with an appropriate water flow, which is 2.4 GPM
  • It is compatible with many brands of Homelite/Husky/Ryobi Pressure Washers
  • It does not have a thermal release valve
  • Its weight is only 4 pounds
  • It fits a 7/8” shaft vertical crank engine
  • It is a genuine OEM replacement pump

Pros: You should know the good sides of the Homelite Vertical Pressure Washer Pump.

  • For powerful cleaning tasks, it’ll be terrific
  • You will get the sufficient water flow rate
  • It will not make your machine heavy
  • It fits most of the pressure washers
  • You yourself can easily install this pump
  • You don’t have to pay much for this product

Cons: There are some bad sides as well.

  • You will not get the thermal relief valve
  • For your heavy-duty work, it might not provide you with sufficient power.

You might choose this pump when you don’t have much money in your pocket. Based on its features and performance, you can put this inexpensive pump’s group. Before you buy, don’t forget to match it with your pressure washer model so you don’t have to face any hassle. Your investment will be safe with this pump.

Best for Vertical Engines: Universal Power Washer Water Pump

Being a general person, we primarily use the pressure washer for our residential purpose. We maintain different professions, and when any technical matter comes up, we tend to get confused. To replace the spoilt pump of our machine Homelite Himore Universal Pressure Washer Pump can be a lifesaver. The best part of this tool is that it fits in many machines that are often used in homes. You yourself can easily change it by simply following its user manual. You might need a toolbox containing the necessary parts to open the pump. Using this pump on your machine will be very effective and trustworthy.

Attractive Features:

Have a look at its specifications that might help you decide if you want to choose this pump or not.

  • It will provide maximum 2800 PSI water pressure
  • The water flow rate will be 2.3 Gallon Per Minute
  • Its space between Mounting Bolts: 7 11/16″ – 6 3/16″ – 6 7/16″
  • Its 7/8” shaft Fits Honda GC135, GX140, GC160easily
  • Briggs and Kohler engines with 7/8 inch diameter
  • Thermal Relief Valve is included with it.

Pros: The good sides of Homelite Universal Pressure Washer Pump are:

  • This pump is compatible with many residential machines
  • For heavy-duty cleaning 2800, PSI will work just fine
  • It’s very easy to install
  • You will get a good water flow
  • Its weight is not much to carry
  • You will get a good quality service
  • The inlet and outlet will point in the opposite direction.

Cons: Its bad sides are:

  • Its shaft will not fit ¾” motor’s shaft
  • Some of the buyers’ pumps are leaking after they got the delivery which they need to replace.

The price of this product is very low, so it is affordable to most of its users. This pump is highly recommended to the residential pressure washer users. Your investment will be secured by this purchase. Learn about its good and bad sides for selecting. You don’t have to worry about its installation as it’s very easy.

Best for Heavy Cleaning: Himore 309515003 Pump

This pump fits most of the pressure washer brands, so you don’t have to worry about its installation. Himore 3000 PSI Power Pressure Washer Horizontal Pump is famous for producing high-pressure and more GPM that is essential for your cleaning job. To complete your pump requirements for a residential pressure washer this one can be a really good option. All its users have provided a good review which establishes its good performance and longer durability. Before buying, you just need to keep in mind that it is a horizontal pump.

Attractive Features:

This pump has many features that you might want to know.

  • It’ll provide 3000 PSI water pressure
  • It fits with ¾ inch horizontal crank engine
  • 6 GPM water flow is quite enough to clean things properly
  • This pump is featured with metal that ensures its durability
  • When new, the oil in the pump is already installed
  • It has a thermal release valve
  • There is a chemical injector and garden hose hookup

Pros: Good sides of Himore 3000 PSI Power Pressure Washer Horizontal Pump are:

  • You will get sufficient power to clean your homely stuff
  • It is a horizontal pump
  • The product is quite durable
  • You can easily inject chemicals from outside
  • It fits most brands, so you don’t need to worry
  • You will get it for a cheap price

Cons: It has some demerits as well.

  • You have to control it carefully as it is quite powerful
  • It produces noise that might annoy you
  • You need to be careful while using it for your delicate stuff.

Based on its different features and benefits, one can easily choose this product. If you are tired of finding the appropriate pump for your pressure washer, you can try this one. It actually fits most brands and most models, which is a good advantage. It will save you money as well that you can use for another purpose.

It is your decision to select the pump you will buy for your pressure washer. You just have to think about a few important things such as product match, PSI and GPM capability, product brand, and its users’ reviews. You must not forget to match the product to avoid unnecessary changing. Matching with the machine, you have to select the PSI and GPM. Good brands always make good products for their reputation depends on it. Learn properly about a product before buying so that you can avoid future troubles.

Pressure Washer Pumps’ Maintenance:

A pressure washer pump can only function for so long if it is haphazardly used. Proper pump maintenance is essential to ensure its longevity and proper function. If you carefully follow some of the steps mentioned below, you can easily maintain your pressure washer pumps for a longer-than-average period:

Inspect and Clean Inlet and Outlet Filters: 

Regularly check and clean the inlet and outlet filters. These filters prevent debris and particles from entering the pump and causing damage, apart from providing many other benefits. Dirty filters can reduce the pressure and water flow rate of the pressure washer, making it less effective in cleaning.

Check and Maintain Oil Levels: 

Another very important thing in pump maintenance is checking the oil levels in the pump regularly and replacing them as needed. Lubricating oil helps to cool the pump and reduce wear and tear on its internal components.

Inspect and Replace Worn Seals: 

Inspect the pump seals weekly, if not daily, for signs of wear or damage. Worn or damaged seals can cause leaks and reduce the pump’s pressure. If you notice any signs of wear, it is recommended to replace the seals.

Use Clean Water: 

Ensure that only clean water is used with the pressure washer. Using contaminated water can not only cause damage to the pump but also reduce its lifespan.

Store Properly: 

After use, drain the pump of any remaining water and store it in a dry place. This will prevent any damage to the pump caused by freezing or rust. Contaminated water stored might multiply the harmful effects.

Check and Tighten Bolts: 

Check the bolts holding the pump in place and ensure they are tight. Vibrations during operation can cause bolts to loosen, leading to leaks or damage.

By following these maintenance steps, pressure washer pumps can be kept in good condition.


What is the dissimilarity between triplex and axial pumps?

There are two primary categories of pumps: Axial: A smaller pump perfect for many light and medium duty applications thanks to its wobble plate mechanism. Triplex: For medium and heavy-duty applications, this bigger pump has a crankshaft and piston arrangement that produces more power and has a longer lifespan.

What is the ideal PSI necessary for washer pressure?

The most practical pressure washers produce 1,900 and 3,000 PSI, effectively cleaning dirty garage floors and filth on houses, borders, boats, and even the most heavily utilized off-road automobiles. Also, the ones with PSI near 3,200 are adequate for persistent stains.

What is the ideal PSI to clean a car?

Car washes usually eject their fluids at 1,000 to 1,200 PSI, while in exceptional cases, pressures can hit 2,200. For this reason, in addition to the slaps from towels and squirts of hot wax, we do not advise walking through a car wash.


The performance of your machine highly depends on the quality of your pump. The price of the Triplex Plunger pump is the highest among the three, then the Axial Cam pump and the wobble pump. When you buy a machine, you should look for a better pump that lasts long and doesn’t need frequent maintenance. If you need to replace your pump, you should go for the better one if your machine supports it.

About Daniel Wood

Daniel has completed his graduation mechanical engineering from a reputed university in US. He worked as a technical engineer in a pressure washer manufacturing plant for four years. He has a great passion for mechanical devices and has opened a workshop where he does research on various machines in his leisure time. His high interest in technology made him an expert in commercial and residential pressure washers.

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