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4.6 out of 5 stars. 257 reviews
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SIMPSON 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State

4.6

(257 Reviews)

|

Item # 1056222

$1,199.99

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

4.6257 Reviews

Item # 1056222

Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
$1199.99
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Powersport plans are not available in CA & MD.
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SIMPSON 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State

4.6257 Reviews

Item # 1056222

Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
Image showing 4,200 PSI 4 GPM Gas Cold Water PowerShot Pressure Washer with Industrial Triplex Pump, Honda GX390 Engine, 49-State
$1199.99

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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.
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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.

  • 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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203 reviews with 5 stars.
35 reviews with 4 stars.
6 reviews with 3 stars.
3 reviews with 2 stars.
10 reviews with 1 star.

Overall Rating

4.6
186 out of 197 (94%) reviewers recommend this product

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  • Area where the pump has a bad leak
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1 to 4 of 257 Reviews
1 – 4 of 257 Reviews
Florida
Review 1

Great product

16 days ago
I just upgraded from a 3100 psi to this honda 4400 psi and power of this machine is insane. I just did my 1st job with it yesterday and it saved me a lot of time to complete this existing client. 100% recommended.

Originally posted on simpsoncleaning.com

Response from simpsoncleaning.com:
13 days ago
Simpson Team
We're happy to hear you enjoyed a massive power upgrade, & your 4400 PSI pressure washer performed to tackle the job with ease. Show off your work any time by tagging #simpsonclean on social media & we'd love to see the results you achieve as you clean. Thanks for your recommendation & review, Tipiti!
Vonore, TN
Review 1

Simpson, Simply the Best

17 days ago
This is my second Simpson pressure washer. The first washer performed flawlessly so when it was time to purchase a second pressure washer I never considered any other brand than Simpson.

Originally posted on simpsoncleaning.com

Response from simpsoncleaning.com:
16 days ago
Simpson Team
We're so glad to hear your first Simpson delivered such an excellent experience to merit your repeat business, Tom75! It's great to hear your new 4400 PSI pressure washer has been delivering a five-star performance as well. Thanks for the kind words & enjoy that machine.
Review 1

Works great

27 days ago
I bought this power washer about a week ago and so far it has been working great

Originally posted on simpsoncleaning.com

Response from simpsoncleaning.com:
25 days ago
Simpson Team
It's great to hear you've enjoyed an excellent performance from your new 4200 PSI pressure washer, Clem1982. Show it off any time by tagging #simpsonclean on social media with your before/after photos & we'd love to see it at work. Thanks for the positive feedback!
North Carolina
Review 1

Great washer with Adjustable pressure

a month ago
Bought April 2025. Very High pressure and is adjustable. Great for washing the vehicles including the tractor and the house as well as concrete. Fires up first pull

Originally posted on simpsoncleaning.com

Response from simpsoncleaning.com:
a month ago
Simpson Team
We're happy to hear your 4400 PSI pressure washer has performed with plenty of power & versatility to tackle such a wide range of jobs, Autopilot. Show it off any time by tagging #simpsonclean on social media with photos of your projects & we'd love to see it at work. Thanks for reviewing!