Simpson

PowerShot 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer

|596 ratings
Item # 990286907
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Highlights

  • HONDA® GX390 engine is equipped with a low oil shutdown feature
  • AAA® triplex pump has an integrated unloader with a thermal relief valve
  • Monster, 50 ft. dual braided high-pressure hose is kink and abrasion-resistant with a non-marring polyurethane outer jacket with QC fittings
  • Welded steel frame construction with a powder-coated finish for durability and corrosion resistance
  • 13 in. Premium pneumatic tires for ease of maneuverability across various terrain

    • Sun Joe 2200 PSI Electric Pressure Washer W/ Wheels | Accessory Kit | 14.9-Amp | 1.1 Rated GPM $99.98 Was $149.98

    Sun Joe 2200 PSI Electric Pressure Washer W/ Wheels | Accessory Kit | 14.9-Amp | 1.1 Rated GPM
    current price Now $99.98, Was $149.98

    Sun Joe 2200 PSI Electric Pressure Washer W/ Wheels | Accessory Kit | 14.9-Amp | 1.1 Rated GPM

    5 out of 5 stars
    5 out of 5 Stars. 8 reviews
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    PowerShot 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer
    PowerShot 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer
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    About this item

    Product details

    Superior Cleaning Power

    The SIMPSON® PowerShot™ Series is specifically designed to withstand the rigorous demands of professional cleaning. These heavy-duty pressure washers offer outstanding flow and unbeatable reliability, making them the ideal choice for contractors specializing in deck cleaning, wood restoration, paint preparation, graffiti removal, and all other professional cleaning services.

    High-Quality Engine

    Each SIMPSON® PowerShot™ pressure washer is equipped with a premium HONDA® engine that is 49-State compliant. These engines are constructed with high-quality components to ensure optimum performance. They are also renowned for their easy-start feature, which makes them a favorite among professionals.

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    Specifications

  • 5 Quick connect nozzle tips, 0°, 15°, 25°, 40° and soap nozzle to use for a variety of cleaning applications
  • Unit Dimensions: L 38 in. x W 23.5 in. x H 29 in.
  • Unit Weight: 136 lbs.
  • Images shown may vary from the actual unit
  • This product is not for sale in California

    • Member ratings & reviews

    4.7 out of 5 stars
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    596 ratings596 reviews
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    1. 5 stars83% (495)
    2. 4 stars13% (76)
    3. 3 stars1% (7)
    4. 2 stars1% (3)
    5. 1 star3% (15)
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    Showing 1-3 of 596 reviews

    Jul 19, 2026
    bricks
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    pressure washing business

    [This review was collected as part of a promotion.] This is one of the best pressure washer I have ever used so far. It is easy to set-up and to fix if need be. I am using it for an huge storefront job here soon, also for an HOA. Let me know if you if it hold up.

    Review from simpsoncleaning.com
    Helpful?7AT7XV54Y2LL15224104831
    Jun 27, 2026
    Mark P123
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Lots of power

    [This review was collected as part of a promotion.] Excellent first impression. The Honda GX390 started easily, the machine feels extremely solid, and the 4.0 GPM flow is noticeably stronger than homeowner-grade pressure washers. Assembly was simple, and all components appear to be high quality. I purchased this for driveway cleaning and small business use, and it looks like it will be more than capable. Very happy with the purchase so far.

    Review from simpsoncleaning.com
    Helpful?7AT7XV54Y2LL15224104831
    Jul 3, 2026
    Donnie8478
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Powerful

    I bought the Simpson pressure because I wanted more cleaning power for my house siding, sidewalks and driveway. I previously had a 15 year old 3500 psi that the pump died. It didn’t cost much more to buy a new 4400 Simpson than a new pump. There is a world in the cleaning ability of the Simpson. I would highly recommend this pressure washer to anyone that has heavy duty cleaning Donnie Murphy

    Review from simpsoncleaning.com
    Helpful?7AT7XV54Y2LL15224104831

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