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4.7 out of 5 stars. 548 reviews
A woman outside with a dog
A woman outside with a dog

SIMPSON 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State

  • Limited Time Deal

SIMPSON 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State

Item # 105622299

$1199.00

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Was$1299.99

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Notice:
This Item cannot be shipped to CA.
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What's included
Powersport plans are not available in CA & MD.
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  • Limited Time Deal

SIMPSON 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State

Item # 105622299

$1199.00

Sale

Was$1299.99

Save $100.99

or
or
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$50/mo.†  suggested payments with 24 Months Financing or earn $59 in Rewards+ on this purchase.
Valid 5/15/2026 - 7/5/2026

This item is available online only

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Notice:
This Item cannot be shipped to CA.
Add a protection plan
What's included
Powersport plans are not available in CA & MD.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

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The SIMPSON 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump is designed to meet the rigorous demands of the cleaning pro. This is a heavy-duty pressure washer with flow and reliability. The pressure washer is perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal, and all other professional cleaning services. Equipped with the premium Honda engine built with high-quality components, the pressure washer is designed for optimum performance and renowned for being easy to start. AAA industrial triplex pumps enhance impact and cleaning performance. Built to withstand tough conditions and frequent use, this pressure washer ensures longevity and dependable results. Get the job done right with this powerful pressure washer!

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.

  • Honda GX390 engine with low oil shutdown to prevent seizure due to low oil levels
  • AAA triplex pump has an integrated unloader with a thermal relief valve
  • Monster hose; 3/8 in. x 50 ft. kink and abrasion-resistant hose with quick-connect fittings and polyurethane outer jacket
  • Pressure washer is built with welded steel frame construction and powder-coated finish for durability and corrosion resistance
  • 13 in. premium tires included with pressure washer for ease of maneuverability across various terrain
  • Pressure washer features 5 quick-connect nozzle tips: 0, 15, 25, 40 and soap to use for a variety of cleaning applications
  • 3 year limited commercial engine warranty; 5 year limited commercial pump warranty; 10 year limited commercial frame warranty; 90 day limited accessory warranty
  • QC spray lance wand included with the pressure washer
  • 31 in. wand lance included
  • This product is not for sale in California
  • Made in the USA
  • Images shown may vary from the actual unit

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Reviews

Rating Snapshot

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447 reviews with 5 stars.
71 reviews with 4 stars.
8 reviews with 3 stars.
3 reviews with 2 stars.
19 reviews with 1 star.

Overall Rating

4.7
186 out of 197 (94%) reviewers recommend this product

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Summary of Reviews
AI-generated from customer reviews, which may include incentivized reviews.
Customers overwhelmingly praise this pressure washer for its exceptional 4200-4400 PSI power and reliable performance, with most noting it cleans concrete, driveways, and heavy grime remarkably fast—s...
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1 to 4 of 548 Reviews .
1 – 4 of 548 Reviews
Review 1

Simpson

11 hours ago
Cleaned the patio and driveway and it looks amazing. Also didn't take no time

Originally posted on simpsoncleaning.com

Ms
Review 1

Makes cleaning so easy outdoors!

15 hours ago
[This review was collected as part of a promotion.] Used once and worked better than any other pressure washer I have had.

Originally posted on simpsoncleaning.com

US
Review 1

Great product

a day ago
Great product, easy to assemble and operates very smoothly.

Originally posted on simpsoncleaning.com

US
Review 1

Great pressure washer

a day ago
Glad i decided to go with the Simpson PowerShot, this pressure washer is heavy duty, easy to use, starts first pull every time, and does a great job on everything I've washed so far. 100% recommend this pressure washer.

Originally posted on simpsoncleaning.com