Simpson Honda GX390 PowerShot 4200-PSI 4-GPM Gas Pressure Washer-PS4240H - The Home Depot


Model # PS4240H

Internet # 203448619

Honda GX390 PowerShot 4200-PSI 4-GPM Gas Pressure Washer

Simpson Honda GX390 PowerShot 4200-PSI 4-GPM Gas Pressure Washer

This item has been discontinued.
The Home Depot no longer carries this specific product.

$999.00 / box


Model # PS4240H

Internet # 203448619

Designed to meet the rigorous demands of the cleaning pro, the Simpson PowerShot is very powerful, yet extremely compact, easy to transport, set-up and load. Perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal, and all other professional cleaning services. Equipped with co mmercial series Honda GX OHV engines that are built with high-quality components and designed for optimum performance in the harshest environments. Honda engines are paired with AAA industrial triplex plunger pumps, a brand with a history of over 40 years of innovation. AAA pumps are equipped with patent pending PowerBoost technology that provides higher pressure at the nozzle, resulting in greater impact and cleaning performance.

California residents: seeProposition 65 information

  • Honda GX390 OHV co mmercial series engine with Oil Alert - Engine oil is included
  • AAA by Comet industrial triplex plunger pump with ceramic pistons and adjustable unloader for controlled pressure
  • 3/8 in. x 50 ft. high pressure steel-braided hose is non-marring, kink and abrasion resistant, and equipped with quick connectors
  • Welded steel frame, steel engine plate, solid steel axle and 13 in. pneumatic tires
  • Secondary handle for protection and on-the-go operating instructions
  • Pro-style spray wand with 5 stainless steel quick connect nozzle tips - 0°, 15°, 25°, 40°, and soap applicator
  • Professional spray gun safety lock-out
  • Convenient on-board a ccessory storage for spray gun/wand, high pressure hose, and nozzles
  • Downstream detergent injection system for convenient use of cleaners
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.)  36 in  Assembled Height (in.)  26.5 in 
Assembled Width (in.)  23 in  Hose Diameter (In.)  .375 in 
Hose length (in.)  600  Wheel Diameter (in.)  13 in 
CA (CARB) Compliant  CARB Compliant  Commercial  Yes 
Detergent tank  No  Engine Displacement (cc)  389 
Engine Make  Honda  Engine Type  Direct Drive 
Foldable handle  No  Fuel tank capacity (gallons)  1.6 
GPM  Hose Material  Rubber 
Maximum Pressure (PSI)  4200  Number of tips included 
Onboard storage  Yes  PSI Range  3200+ PSI 
Pressure Washer Power Type  Gas  Product Weight (lb.)  141 lb 
Pump Brand  Other  Pump Type  Triplex 
Reconditioned  No  Returnable  30-Day 
Start Type  Manual  Translucent fuel tank  No 
Water capability  Cold  Wheels  Yes 
Warranty / Certifications
Manufacturer Warranty  Limited Warranty – Commercial Use - 3 Years on HONDA GX engine, 5 Years on AAA pump, 1 Year frame components, 90 Days on spray accessory items 


Rated 3.9 out of 5 by 9 reviewers.
Rated 1 out of 5 by Excellent machine. Terrible customer support Bought the 4200 and the machine is a very powerful unit. Does an excellent job. Unfortunately, the pump failed after 6 months and I called DeWalt. They told me to bring it back to one of their "authorized" service centers. After about a month of calling them, I finally got it back. it worked for about 2 minutes and failed again. I spoke with Dewalt and told them I would not bring it back to the service center and do they have another one close by. They recommended another facility and after another month, I finally got them to look at it. I got a call from a guy from FNA, the supposed manufacturer of the pump. He said FNA only has a 90 day warranty on the pump. Well why does DeWalt say 2 years? He told me that the pump needs to go back to Comet (??) to be evaluated. I said go ahead, but if its out of warranty, you might as well throw it in the dumpster. So after about 4 months of going back and forth with DeWalt (3 people), FNA (2 people) and Comet, I finally decided to remove the Honda engine (excellent engine) and mount it to my trailer. I went and bought a General pump, mounted it to the engine and now i have an excellent pressure washer thats mounted to a trailer. I have 4 Dewalt units and I am planning on doing the same with the rest. I am not happy with the customer service and all the bouncing around I did to get answers and the lies about the warranty. I would give the customer service a -1 star if i could. December 10, 2014
Rated 5 out of 5 by Simpson Powershot A great addition to my maintenance tools. Easy to assemble and started smoothly. Very powerful with the addition of a rotating nozzle..The o nly thing bad is the hoses and wand are tacky and cheap. I use 3 other washers and all hook up universally. The Simpson hoses do not and are cannot handle heat. Buy a quality wand,turbo nozzle and hose and you will own a very efficient piece of equipment. May 20, 2014
Rated 5 out of 5 by Attention! One very important thing, this product only can use highest fuel type. It is 93 in my NC. I use 87 fuel type, it won't start and can cause starting problem, please never use cheap gas. Powerful machine. Pump is made in Italy, engine by Honda. It is easy to install. It need 1 quart of enclosed oil for the engine. Pump got its oil ready. I recommend this pressure washer to a friend. September 11, 2014
Rated 5 out of 5 by best buy the hancle was difficult to align. the pressure washer met all expectations. July 20, 2014
Rated 5 out of 5 by Simpson Pressure Washer I'm very satisfied with the Simpson pressure washer as it works great, easy to start and is a well built unit. Simple to set up out of the box and works as advertised. I picked the unit up at my local Home Depot after ordering the pressure washer online with no problems. May 13, 2014
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