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4.6 out of 5 stars. 598 reviews
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SIMPSON 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State

4.6

(598 Reviews)

|

Item # 1168270

$799.99
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A woman outside with a dog

SIMPSON 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State

SIMPSON 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
4.6580 Reviews

Item # 1168270

Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
$799.99
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SIMPSON 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
4.6580 Reviews

Item # 1168270

Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
Image showing 4,000 PSI 3.5 GPM Gas Cold Water PowerShot Professional Pressure Washer, Honda GX270 Engine, 49-State
$799.99
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or
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Valid 5/15/2026 - 7/5/2026Apply now

Out of stock at or near

Grassland (franklin) TN

Out of stock delivering to

37027

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This Item cannot be shipped to CA.
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The SIMPSON PowerShot 4000 PSI at 3.5 GPM HONDA GX270 with AAA Industrial Triplex Pump Cold Water Professional Gas Pressure Washer is designed to meet the rigorous demands of the cleaning pro. This heavy-duty 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 premium HONDA engines built with high-quality components, the gas pressure washer is designed for optimum performance and renowned for being easy to start. The gas pressure washer's AAA industrial triplex pumps with patent-pending PowerBoost Technology provide higher pressure at the nozzle, resulting in greater impact and cleaning performance. Get the job done right with this powerful gas pressure washer! Its user-friendly controls and reliable performance make it a valuable tool for tackling a wide range of challenging cleaning tasks. Warranty included.Images shown may vary from the actual unit

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.

  • Gas pressure washer operates using a HONDA GX270 engine with low oil shutdown feature
  • Reliable AAA industrial triplex plunger pump with PowerBoost Technology delivering higher pressure at the nozzle
  • Gas pressure washer comes with a monster hose - 3/8 in. x 50 ft. kink and abrasion resistant hose with quick connect fittings and polyurethane outer jacket
  • Welded steel frame construction with powder-coated finish for durability and corrosion resistance
  • Gas pressure washer features 13 in. premium tires for ease of maneuverability across various terrains
  • Pressure washer features 5 quick connect nozzle tips: 0, 15, 25, 40 and soap nozzle to use for a variety of cleaning applications
  • This product is not for sale in California
  • 3 year limited commercial engine warranty; 5 year limited pump warranty; 10 year limited frame warranty; 90 day limited accessory warranty

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Reviews

Rating Snapshot

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477 reviews with 5 stars.
63 reviews with 4 stars.
19 reviews with 3 stars.
9 reviews with 2 stars.
30 reviews with 1 star.

Overall Rating

4.6
182 out of 199 (91%) 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 exceptional power, reliable performance, and durable construction. The 4000 PSI rating with 3.5 GPM flow effectively removes dirt from concrete...
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Most Helpful Favorable Review

A powerful machine at a reasonable price point.

5 years ago
The Simpson PowerShot 4000psi pressure washer with Honda pump is a workhorse of a machine. I was pleasantly surprised to see that it had the power to blast the grime off my driveway removing many years of over spray from DIY projects and baked in oil stains. Additionally, I purchased through another vendor a Foam Cannon to make short work of various cleaning tasks including the Tractor, Trucks, and even the brick on my house. I provided five star feedback because it does everything as advertised at about half the price of it's competitor from another well known pressure washer brand. My only complaints thus far are as follows: no pressure gauge to tell what level you have set the pressure to; pressure relief valve is very hard to turn both under pressure and without pressure; the hose is very stiff, just a step better than the cheap pressure washers; the handle is far too short to be useful; and finally it would be nice if there was a tank for chemicals. We have no way to get a bucket underneath the level where it needs to be. But, a gravity feed tank would make things much easier.
9 people found this helpful
Show Reviews:

Most Helpful Critical Review

Wow...what a disappointment.

5 years ago
Ran for a total of less than 60 seconds - with the trigger pulled before that was a gunshot loud pop and the pump blew with a chance flying across my pool deck. Good thing there was nobody in the way. Called Simpson and their response was that they could let me know the service center near me....no thanks. Thankfully, Tractor Supply took the unit back without question and even apologized for the inconvenience. I research long and hard before deciding on this unit. Not sure what I will purchase now - very concerned about Simpson quality at this point.
15 people found this helpful
Show Reviews:

Customer Images and Videos

  • Review photo 1.
  • the black over black warning does not do any good
  • Less than 1 year old
  • Looks clean and barely used
  • Leak spraying from bottom of brass pump manifold where it meets iron housing
  • Looks to be in brand new condition still!
  • No cracks in the pump manifold. So the leak is not from freezing.
  • Review photo 8.
  • purchase
  • satisfaction
  • powerful
  • pressure
  • cleaning
  • cleaning
  • price
  • quality
1 to 4 of 598 Reviews .
1 – 4 of 598 Reviews
US
Review 1

Plenty of power

a day ago
Bought this to start a little pressure washing side hustle. So far has treated me good with plenty of power to clean house siding and patios. Only con i’ve had is in the box it was packaged in is also a quart of 10w-30 oil but on the motor it says use 15w-40. I didn’t see that until my 4th time using it. Some oil is better than no oil i guess.

Originally posted on simpsoncleaning.com

US
Review 1

Amazing Pressure Washer

a day ago
Easy to use and setup, powerful and cleans exactly and you'd expect from a Simpson product

Originally posted on simpsoncleaning.com

US
Review 1

Starts easily

a day ago
Just purchased and tried it out. Very powerful. So far so good.

Originally posted on simpsoncleaning.com

US
Review 1

Powerful machine

2 days ago
A bit heavy but get my jobs done fast. 3.5 GPM is perfect size for large diy projects.

Originally posted on simpsoncleaning.com