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4.2 out of 5 stars. 36 reviews
A woman outside with a dog
A woman outside with a dog

AAA 3,800 PSI at 3.5 GPM Industrial Pressure Washer Triplex Plunger Pump Kit

  • Limited Time Deal

AAA 3,800 PSI at 3.5 GPM Industrial Pressure Washer Triplex Plunger Pump Kit

Item # 130788399

AAA AAA 3,800 PSI at 3.5 GPM Industrial Pressure Washer Triplex Plunger Pump Kit
AAA AAA 3,800 PSI at 3.5 GPM Industrial Pressure Washer Triplex Plunger Pump Kit
$332.99

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Was$369.99

Save $37.00

or
or

Buy Any Pressure Washer, Get 20% Off Pressure Washer Accessories


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  • Limited Time Deal

AAA 3,800 PSI at 3.5 GPM Industrial Pressure Washer Triplex Plunger Pump Kit

Item # 130788399

AAA AAA 3,800 PSI at 3.5 GPM Industrial Pressure Washer Triplex Plunger Pump Kit
AAA AAA 3,800 PSI at 3.5 GPM Industrial Pressure Washer Triplex Plunger Pump Kit

Buy Any Pressure Washer, Get 20% Off Pressure Washer Accessories

$332.99

Sale

Was$369.99

Save $37.00

or
or
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$56/mo.†  suggested payments with 6 Months Financing or earn $16 in Rewards+ on this purchase.

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Engineered to surpass expectations, the 90038 AAA Triplex Pump is highly efficient and minimizes engine load while delivering top performance. This easy-to-install pump replacement kit is for gas pressure washers* with a horizontal engine and a 1 diameter shaft, such as the Honda GX270. This pump can produce up to 3800 PSI at 3.5 GPM. The 90038 is designed with dual oversized ball bearings to reduce friction and allow for long lasting performance in the toughest cleaning environments. The 90038 features a stainless steel integrated unloader featuring our easy-start system. 5 Year Limited Warranty

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

Looking for more information on pressure washers? Check out our guide on how to maintain a pressure washer in the product documents section.

  • 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 3800 PSI at 3.5 GPM to wash walls, fences, sidewalks, vehicles, and more.
  • Easy Installation: This replacement pump features a garden hose inlet and QC quick connect 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.
  • Adjustable Power: This pump includes PowerBoost Technology that delivers higher pressure at the nozzle for a more efficient cleaning experience. There is also a hand turn knob that lets you reduce power at your convenience for tasks that require lower pressure.
  • Know When to Change Your Oil: The sight glass and advanced oil seal technology eliminates the need for a dipstick. with visibility to the oil level and the oil itself, you can easily see when oil levels are low or if water has clouded the oil.
  • 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.

Q&As

1 - 10 of 15 Questions

Q: Will this pump handle 117°F water continuously for 8 hours ?

4 years ago
1 Answer
  • A: TSC does not have the specifications needed to answer your question. Please contact the FNA Group directly at (847) 348-1500 with your inquiry.
    4 years ago
    Helpful?

Q: I want to make sure that this pump will work on my 3800 DeWalt pressure washer. Thank you

4 years ago
1 Answer
  • A: This is the correct pump
    4 years ago
    Helpful?

Q: Will this pump work for a John Deere pressure washer?

Anonymous4 years ago
1 Answer
  • A: We would need to know the model of the John Deere and the engine size to be able to assist with an answer.
    4 years ago
    Helpful?

Q: will this pressure washer pump fit a dealt 3800 psi 3.5 gal per minute powered by a Honda motor

4 years ago
1 Answer
  • A: Yes, this is a correct pump replacement for the DXPW3835
    4 years ago
    Helpful?

Q: Does this pump have ceramic or steel pistons?

5 years ago
1 Answer
  • A: Please contact the FNA Group directly at (847) 348-1500 with your inquiry.
    5 years ago
    Helpful?

Q: Does this pump fit a Simpson Pro Series 4000psi 3.5 GPM? 

5 years ago
1 Answer
  • A: TSC does not have the specifications needed to answer your question. Please contact the FNA Group directly at (847) 348-1500 with your inquiry.
    5 years ago
    Helpful?

Q: Will this fit my dewalt dxpw4035 without changing the psi as it is rated 3800 instead of 4000psi?

5 years ago
1 Answer
  • A: Unfortunately, we do not have the specifications needed to answer this questions. Please contact the FNA Group directly at (847) 348-1500 for your inquiry.
    5 years ago
    Helpful?

Q: Says 3800psi at 3.5 gpm but the one pic say 2800psi at 2.8 gpm so which is it? Big difference!

5 years ago
3 Answers
  • A: 3.5 gpm is 3.5 gallons of water per minute. 2.5 gpm is a lower pressured pump and will only deliver 2.5 gallons of water per min. this can be a very significant change in performance when dealing with stain removal.
    5 years ago
    Helpful?

Q: Will this pump fit the PREDATOR 8 HP (301cc) OHV Horizontal Shaft Gas Engine EPA/CARB and will the predator engine be strong enough to get the 3800psi and 3.5gpm out of this pump? Is there a gasket in between the pump and engine to prevent leaks

5 years ago
1 Answer
  • A: Designed to fit most makes and models of gas pressure washers horizontal engines with 1" shaft
    5 years ago
    Helpful?

Q: will this pump fit my honda 6hp sjv 2.5 G27-1 pressure washer

6 years ago
1 Answer
  • A: Hi mstng05, This particular pump will not fit your honda 6hp sjv 2.5 G27-1 pressure washer. Our 90026 pump kit will fit your pressure washer. I have included the Tractor Supply Link for the 90026 pump kit in this message. If you have any further questions, please call us at 877-362-4271. 90026 Tractor Supply Link: https://www.tractorsupply.com/tsc/product/simpson-oem-technologies-90026-vertical-axial-cam-pump SIMPSON Team
    Anonymous2 years ago
    Helpful?
1 - 10 of 15 Questions

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Reviews

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27 reviews with 5 stars.
1 review with 4 stars.
2 reviews with 3 stars.
1 review with 2 stars.
5 reviews with 1 star.

Overall Rating

4.2
7 out of 10 (70%) reviewers recommend this product

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The product received mixed reviews, with some customers finding it a reliable and easy replacement, while others reported issues with quality and performance. Positive feedback highlighted the simple ...
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    1 to 4 of 36 Reviews .
    1 – 4 of 36 Reviews
    Review 1

    Back in business

    3 months ago
    Perfect fit, easy change over and works great.
    Issaquah, WA
    Review 1

    Faulty Pump

    3 years ago
    I bought this pump back in November of 2021, used it for 10-15 hours, and it's broken down on me. Checked the oil and there was metal shavings everywhere. This product was faulty and should be covered under warranty.

    No, I do not recommend this product.

    South Carolina
    Review 1

    Fake warranty

    3 years ago
    Fake warranty. Simpson will not stand behind warranty. If it works when you get it, it’s yours. Fine print excludes all pump internal parts.

    No, I do not recommend this product.

    WA
    Review 1

    Replacement Pump for Dewalt 3800

    4 years ago
    This is an exact replacement for my previous pump which blew a seal or two. It was a simple swap out and is already to go with only four bolts. I would’ve rather rebuilt the older one but this will last longer with less fuss.

    Yes, I recommend this product.