Replacing a Pressure Washer Pump

If your pressure washer is giving you problems, then it’s time so seriously consider replacing a pressure washer pump. I’ve the reviewed the best replacement pumps on the market and I’ll also give you my pro advice on the most common troubleshooting steps to take to know if you can repair it or need to replace your old pressure washer pump.

My top recommended horizontal axial pump: the Generac Universal Pump available on Amazon.

My Pump Replacement Tips

You’ll be surprised to find out how easy it is to have a damaged pump replaced!

Let me share to you some important tips that will help you in replacing a pressure washer pump:

1.  While you’re in the process of shopping around for a replacement pump, remember that there’s no need for the replacement pump to be of the same brand as your existing pressure washer pump. In short, a Comet pump does not need to be changed out with another Comet pump. It can be another brand, like AR North America, CAT or General, so long as the PSI & GPM specs match up.

2. You have the option of choosing any brand of replacement pump as long as it has the same GPM (Gallons per Minute) and PSI (Pounds per Square Inch) rating as your existing pump.

3. When you are replacing a pressure washer pump, you need to make sure that the bolt pattern and mounting direction match perfectly.

4. If follow these 3 easy steps, above, you’ll see that replacing a pressure washer pump is as easy and as simple as removing a few mounting bolts.

Best Pressure Washer Pump Comparison Chart

Most Popular

Highest Power

Generac Universal Horizontal Mount Pump on Amazon

Himore Universal Vertical Mount Pump on Amazon

AR North America Triplex Pump on Amazon

Quick Review of the Best Replacement Pumps

  • Horizontal Mount
  • Up to 3,000 PSI
  • Comes sealed with fluids 
  • Universal and works with all washer brands
  • Vertical Mount
  • Up to 2,700 PSI
  • Comes Sealed & Ready to use
  • Works with all brands
  • Horizontal Mount
  • Triplex Pump
  • Up to 4,000 PSI & 3 GPM
  • Stainless Steel Plunger Rods
  • Heavy Duty Construction
  • Price  

    Check today's price on Amazon 

    Check today's price on Amazon

    Look up today's price on Amazon 

    Best Pressure Washer Pump Comparison Chart

    1. Quick Replacement Pump Review:

    Most Popular

    Generac Universal Horizontal Pump on Amazon

    • Horizontal Mount
    • Up to 3,000 PSI
    • Comes sealed with fluids
    • Universal & works with all washer brands

    Himore Universal Vertical Mount Pump on Amazon

    • Vertical Mount
    • Up to 2,700 PSI
    • Comes sealed & ready to use
    • Works with all brands

    AR North America Triplex Pump on Amazon

    • Horizontal Mount
    • Triplex Pump
    • Up to 4,000 PSI & 3 GPM
    • Stainless Steel Plunger Rods
    • Heavy Duty Construction

    2. Price

    Troubleshoot Before Replacing a Pressure Washer Pump

    Sooner or later, a pressure washer pump will either fail or simply get worn out. However, before attempting to have your pump repaired or replaced, go through these simple troubleshooting steps first. These steps might save you not only time, but money too.

    Does your pressure washer pump have a warranty? It doesn’t hurt to check if your unit is still covered by warranty. Each pump manufacturer offers a different warranty for their products. While some models are covered by warranty for only 30 days, others on the other hand come with a 2-year warranty!

    Your owner’s manual will come in handy in telling you if your pressure washer is still covered by the manufacturer’s warranty. If your manual is nowhere to be found, your best option is to get in touch with the manufacturer’s customer service department. This 800 number is usually found on a 2-3” silver service plate near the engine of your pressure washer. Again, it’s really a good idea to check your warranty before you decide on replacing a pressure washer pump.

    And you can see my top recommended horizontal replacement pump: the Generac Universal Pump available on Amazon.

    Is the water flow less?

    Many damaged or non-performing pumps I come across, with this problem, are either drawing dirty water or had blockages. The primary cause of this is usually dirty filter screens, especially those found near the pressure washer’s intake valve. This can, in the long run, lead to a burned up pump. Check to see if there are leaves, dirt or grit clogging your filters. And a simple, old toothbrush will easily clean your dirty filter screens. And get your powerful water flowing again.

    A drop in water flow and pressure can also be caused by a leaking gun, o-ring, valve or hose. These parts are not only easily replaced, they are also relatively cheap! A cheap & simple fix.

    Is there no flowing water? The first thing to do is to immediately turn off your unit! Asap! Your pump will be damaged if there is no water flowing through the pressure washer. Also, makes sure there are no kinks in your garden hose and nothing else is blocking the flow of water.

    If you’ve stored your pressure washer for a long time, make sure that you have the oil changed before starting up the washer again. Old oil in the washer will prevent the pump from working properly, so it’s a good idea to change the oil first.

    You’ll also want to check the pump’s oil level using a dipstick or looking at it through the sight window. Make sure that your pump has the proper oil level but never fill it above the advised levels.

    Now you’re well versed on troubleshooting and replacing a pressure washer pump.

    Questions? Contact Me

    Best Pressure Washers Comparison Chart Here - Quick & Easy!

    Best Replacement Pumps Comparison Chart Here!