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OEM Technologies Horizontal Axial Cam Pump Kit 90028 for 3300 PSI at 2.4 GPM Pressure Washers

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  • Designed with a double seal system to prevent water leaks
  • Made from anodized die-cast aluminum for lasting use
  • Features thermal relief protection
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Product Details

About This Product

Designed for performance, the 90028 OEM Technologies Axial Cam Pump is highly efficient and minimizes engine load. This easy-to-install pump replacement kit is for gas pressure washers with a horizontal engine and a 3/4" diameter shaft, such as Kohler SH270 and Honda GC160/190. This pump can produce up to 3300 PSI at 2.4 GPM. The 90028 has stainless steel pistons for improved seal life and features a stainless steel integrated unloader with our easy-start system. Whether you're looking for a replacement part or an accessory to enhance your cleaning experience, SIMPSON has the right one for you! Our accessories provide more cleaning options for the homeowner and professional to get the job done efficiently. Many of our accessories are designed to fit most gas and electric pressure washers.


  • Extend the Life of Your Pressure Washer: Save money by replacing your pump instead of buying a whole new power washer. This easy-to-install kit is great for power washers that can support 3300 PSI at 2.4 GPM to wash walls, fences, sidewalks, vehicles, and more.
  • Easy Installation: This replacement pump features a garden hose inlet and threaded M22 connection high pressure hose outlet. The SAE standard bolt pattern that fits most gas-powered pressure washers. Each 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.
  • Skip the Oil Change: This pump features a maintenance-free crankcase so you never have to change the oil. It is manufactured from fully anodized die-cast aluminum for protection against corrosion.
  • Extended Durability: A Thermal Relief Valve (TRV) protects the pump from overheating while in bypass mode. The TRV releases small amounts of hot water and intakes cooler water to prevent overheating and extend the life of the pump.
  • Get the Right Pump for Your Machine: This pump is designed for gas-powered pressure washers with horizontal engines. Its SAE bolt pattern, hardware, and standard connections make it a great fit for many brands and models of power washers.
  • Gas engine flange fits most engines
  • Designed to fit most makes and models of cold water gas pressure washers with horizontal engines
  • 2-year limited consumer pump warranty
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 206359471

Model # 90028

Store SKU # 1001503196


Dimensions: H 7.5 in, W 5 in, D 8.5 in


Product Depth (in.)

8.5 in

Product Height (in.)

7.5 in

Product Width (in.)

5 in


Brand Compatibility

Universal to most gas pressure washers

Fits Brands

Compatible with Multiple Brands

Fits Models

Kohler SH270, Honda GC160/190

Maximum Pressure (PSI)

3300 psi

Pump Type




Warranty / Certifications

Manufacturer Warranty

1 year limited consumer pump warranty

Questions & Answers

Q:Will this 90028 pump replace the Simpson 3000 power washer?
by|Apr 18, 2024
1 Answer
Answer This Question

A:  yes

by|Apr 20, 2024
    Q:Will this pump fit a Simpson power washer model MS6122? Also can the manifold be purchased separately?
    by|Apr 10, 2024
    1 Answer
    Answer This Question

    A:  Hi, WJohnB. Yes, to both of your questions! Hope this helps!

    by|Apr 16, 2024
      Q:Fit a 3600 psi DeWalt?
      by|Sep 12, 2023
      1 Answer
      Answer This Question

      A:  Thanks for your interest, Jewels. Yes, this will fit your DXPW3625 no problem!

      by|Sep 14, 2023
        Q:Will this work for Simpson 3100 gas washer?
        by|Aug 20, 2023
        1 Answer
        Answer This Question

        A:  Hi, James. Yes, this pump will work just fine on that unit. Thanks for reaching out!

        by|Aug 21, 2023
          Showing 1-4 of 91

          Customer Reviews

          4.5 out of 5

          • 4.5 out of 120 reviews
          • 78% recommend this product
          Filter by:
          Showing 1-10 of 120 reviews
          Poor Quality
          Not much to say, purchased and it does not work. Disappointing.
          Response from SIMPSON TeamMay 15, 2023
          This is not at all what we expect to hear, Mike. Would you give our team a call directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com? We hope to learn all we can about your experience & determine just what you need to get up and running smoothly. We appreciate the feedback and hope you will be reaching out soon. simpson
            New Again :-)
            Was given a simpson pressure washer that was left out in the snow/winter (Pump cracked and leaked). I looked on line to find a new one. I found several and choose to buy one through home depot for $109.99. They were average price for it on line. Plus if it didnt fit (several peoples review said it didnt fit for some reason) i could return it at my local home depot. I took the old one off, got the new one on (key bar is a pain to line up and its a little shorter then the factory one!). Started it up and it works like brand new!!! I would buy it again from home depot! Thank you
            Response from SIMPSON TeamJul 21, 2021
            Thank you.-SIMPSON Team. simpson
              • Recommended
              It was a perfect match for my power washer and very easy to put on took 10 min.I believe it has...
              It was a perfect match for my power washer and very easy to put on took 10 min.I believe it has more pressure than the original. The price was a good price and it was shipped fast.
              • Verified Purchase
              • Recommended
              this was the best and most easy way to get the pressure washer working. match the # and hit buy....
              this was the best and most easy way to get the pressure washer working. match the # and hit buy.. 2 days later u p s hands me a package, and within 25 min. i have a brand new pressure washer..remove 4 bolts, slide off power head, remove keyway clean shaft. replace keyway(included) , slide on power head , replace 4 brand new bolts (included). the old head i will rebuild and put in stock. thank you guys..
              • Verified Purchase
              • Recommended
              1 found this review helpful
              • Verified Purchase
              Poor design and warranty claims misuse
              Purchased pump and broke cast neck off where hose inlet attaches. No way to repair, and no warranty on that. Poor design, and poor support
              Response from Simpson TeamMar 15, 2024
              We are sorry to hear about the broken fitting, Dale W. This certainly is not the experience we expect. Your feedback is extremely valuable, and we will be documenting this content to share with our team. Please don't hesitate to contact us directly at 877-362-4271 or email us at productsupport@simpsoncleaning.com and we will be happy to explore solutions in hopes of improving your experience. We appreciate you taking the time to review!
                The product was easy to install and it works well.
                Response from SIMPSON TeamFeb 29, 2024
                It's great to hear your pump kit was a breeze to install and it's been performing for an excellent pressure washing experience. Thanks for sharing your experience, CAROLE! simpson
                • Verified Purchase
                Exactly I was looking great part thank you
                Response from SIMPSON TeamFeb 22, 2024
                We're glad to hear your pump kit was just the part you needed & it's been delivering an excellent performance for you. Thanks for taking the time to review, Kass! simpson
                • Verified Purchase
                Easy 4 bolt replacement. Works great.
                Response from SIMPSON TeamJan 25, 2024
                It's good to hear you enjoyed the easy installation, and your 3300 PSI pump kit has performed to provide an excellent pressure washing experience. Thanks for taking the time to review, BILL! simpson
                • Verified Purchase
                • Verified Purchase
                Showing 1-10 of 120 reviews