Simpson

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

|645 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
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    5 out of 5 stars
    5 out of 5 Stars. 8 reviews
    Sponsored
    powershot 4200 psi at 4.0 gpm honda® gx390 with industrial triplex pump cold water professional gas pressure washer three-quarter front view showing powder-coated welded steel frame, HONDA GX390 engine with low-oil shutdown, AAA triplex pump with integrated unloader, coiled 50 ft. dual-braided high-pressure hose with QC fittings, and 13 in. pneumatic tires; often used by contractors for deck cleaning, paint prep, and graffiti removal.
    PowerShot 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer
    Hero image 0 of PowerShot 4200 PSI at 4.0 GPM HONDA® GX390 with Industrial Triplex Pump Cold Water Professional Gas Pressure Washer, 0 of 17

    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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    645 ratings645 reviews
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    1. 5 stars84% (541)
    2. 4 stars12% (77)
    3. 3 stars1% (8)
    4. 2 stars1% (4)
    5. 1 star2% (15)
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    Showing 1-3 of 645 reviews

    Sep 21, 2026
    Reviewer name: AnitaCHS123
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Excellent for gum removal on concrete!

    We love our Simpson machine! Throughout the years I e worked with several models and they have never let me down! I love the fact that the can remove the old dried up gum from the school grounds without damaging the concrete! The size of the machine makes them extremely portable and easy to move too! Simpson is the brand for us!

    Review from simpsoncleaning.com
    Helpful?7AT7XV54Y2LL15224104831
    Sep 16, 2026
    Reviewer name: DTHservices
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    Great

    Ah, perfecto. Entonces sería: I’ve had this pressure washer for 10 years, and it has worked really well. I bought another one because it’s honestly a great pressure washer! O más natural para una reseña: I’ve had this pressure washer for 10 years, and it has worked great. I just bought another one because it’s honestly that good. Highly recommended!

    Review from simpsoncleaning.com
    Helpful?7AT7XV54Y2LL15224104831
    Jun 25, 2026
    Reviewer name: Green Lion Services
    5 out of 5 stars
    5 out of 5 stars review

    Verified Purchase

    What an amazing working machine

    I just bought and used it in a family friend house. The power is amazing, and the easyness to set it up and work is instantly. I am very happy with the choice and the options to do the work, the manuals, instructions and videos on how to use very helpful.

    Review from simpsoncleaning.com
    Helpful?7AT7XV54Y2LL15224104831

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