Search  for anything...
SIMPSON

Simpson PS4240 PowerShot Gas Pressure Washer Powered by Honda GX390, 4200 PSI at 4.0 GPM, (49 State) 60456

  • Based on 624 reviews
Condition: New
Checking for the best price...
$1,199.00 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Nov 6
Order within 2 hours and 19 minutes
Available payment plans shown during checkout

Recently Viewed

Style: 4200 PSI


Features

  • Professional Performance: Easy-to-assemble and easy-to-start with its Honda GX390 premium engine, the PowerShot power washer is great for contractors who specialize in deck cleaning, wood restoration, paint preparation, and all other professional services.PowerBoost: Yes
  • Power and Durability: A powerful, reliable, maintenance-free AAA industrial triplex plunger pump delivers 4200 PSI at 4.0 GPM and includes thermal relief to prevent overheating
  • Sturdy and Portable: The welded steel frame construction with powder coated finish offers durability and corrosion resistance; 13-inch premium pneumatic tires deliver ease of maneuverability across various terrain and uneven ground
  • Includes Quality Accessories: Monster 3/8" x 50' high-pressure hose is kink and abrasion resistant hose with quick connect fittings and polyurethane outer jacket; 5 Quick connect nozzle tips: 0, 15, 25, 40 and Soap; Ergonomic spray gun 31" steel wand
  • Important Notes: 49-state compliant; Keep max fuel level 1/2 Inch below bottom of filler neck to avoid spillage

Description

The SIMPSON Power Shot 4200 PSI at 4. 0 GPM is ideal for prosumers and professionals alike. This is a powerful option for deep outdoor cleaning, job site use, equipment upkeep and facility or fleet maintenance. This product is engineered to meet the demands of a cleaning professional. The PS4240 features a commercial HONDA GX390 engine, reliable AAA industrial triplex pump, 50-ft kink & abrasion resistant hose, ergonomic spray gun and 5 Quick-connect nozzles. Designed to meet the rigorous demands of the cleaning professional, the SIMPSON Power Shot Series frame is crafted of solid steel making it 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. The SIMPSON Power Shot Series designed for optimum performance in the harshest environments. 3 year limited HONDA commercial engine, 5 year limited pump, 10 year limited frame and 90 day accessory. From the Manufacturer The PowerShot is an extremely powerful direct drive machine. The PowerShot is “The Choice” for Contractors and Cleaning professionals who want direct drive simplicity and SIMPSON quality in one package. More pressure and more water flow result in even greater cleaning performance and faster job completion. Those who agree that “Time is Money” use the PowerShot! Warranty Details: Engine - 3 Year Limited Commercial Warranty | Pump - 5 Year Limited Warranty | Frame - 10 Year Limited Warranty. Heavy duty welded steel construction with steel axle frame

Brand: SIMPSON


Power Source: Gasoline


Color: Black


Item Weight: 141 Pounds


Hose Length: 50 Feet


Product Dimensions: 8"L x 3"W x 50"H


Tank Volume: 1.61 Gallons


Maximum Flow Rate: 4 Gallons Per Minute


Global Trade Identification Number: 13


UPC:


Brand: SIMPSON


Power Source: Gasoline


Color: Black


Item Weight: 141 Pounds


Hose Length: 50 Feet


Product Dimensions: 8"L x 3"W x 50"H


Tank Volume: 1.61 Gallons


Maximum Flow Rate: 4 Gallons Per Minute


Global Trade Identification Number: 13


UPC: 879399000713


Item Weight: 141 pounds


Manufacturer: SIMPSON


Item model number: PS4240H-SP


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 6

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • OMG, why did I wait to get this?
Style: 4200 PSI
I have has a smaller electric unit (Westinghouse 2K), which I still love and will use a lot for smaller jobs. However I have a lot of hard surfaces on my property and, living in the Pacific NW with the rain, trees and shade means I also have a LOT of moss and other organic buildup to deal with. I have done a lot of research. I've purchased other pressure washers. I finally decided to make the investment in a commercial grade machine because I wasn't getting the results I wanted in any reasonable amount of time and my electric simply doesn't drive a surface cleaner. Manually wanding my driveway was taking days with the electric and that was just focusing on the most important areas. So, with some advice of a trusted friend who owns a rental company, I decided to take the plunge on something with enough pressure (4k PSI) and GPM (3.5 or more) to make a meaningful impact. All I can say is: Wow! In the first 3.5 hours of use, coupled with the Mekoh 18" surface cleaner, I was able to clean 3 times the amount of moss-coated (thick in many spots) surface compared to the surface cleaned in 3+ days manually wanding. I also have a sports court which needs love and will be my next tackle. The obvious concern I've had is not stripping off the paint, but still getting the surface clean. So I wanted something I could "back down". While the pump on the 4240 has a regulator, I actually purchased the Simpson pressure regulator and it seems to work quite well. I suppose I could use the pump regulator in tandem with the extra in-line Simpson regulator to really dial it in, but I'd prefer not to muck about with the pumps factory settings. To address some of the concerns I've seen in other reviews: the unit arrived in excellent condition obviously all new and delivered on time. The modest assembly of the draw bar and wand and hose caddy was a matter of two minutes, easy peasy. The Honda engine instructions and the Simpson quick start guide were easy to follow in terms of adding the oil, fuel and then start up. Start up was just as straightforwardas the manual said, and, as long as I was following those instructions [ahem], it started on the first pull every time. I did make a note that others had said it's helpful to pull the trigger when starting and so I did that (but not always, and even when I didn't, and I had the switches and throttles in the right position, it still started on the first pull). While I have only used it for a short time, there was absolutely no evidence of oil leaking or any of the other mechanical issues mentioned. If this changes over time, I'll come back and edit this review. Everything about the pressure washer is commercial/contractor grade. The Monster hose is just that - it seems like it will withstand anything but does take extra effort to maneuver. In all, the unit does require strength and some stamina to operate (because it's so strong) and you'll need a ramp or some help to get it into the back of a pickup. But if you compare it's effectiveness and the substantial reduction of time, I'd say overall that it takes much less effort to get amazing results than less powerful models. Bottom line: if you're tired of putting up with lesser units, and have the budget for this fantastic monster, I highly recommend it. ... show more
Reviewed in the United States on April 26, 2024 by Will Riffle
    • Simpson 61014 pressure washer
Style: 3500 PSI
I am highly impressed with the power and quality of this pressure washer. Coupled with the durability of the Honda engine. It runs smoothly and is quiet compared with other engines. After a quick set up and adding engine oil and gas. I was pressure washing in no time. Highly recommended
Reviewed in the United States on October 26, 2025 by Darin Connon
    • Defective out of the box - Water Mixed in Pump Oil
Style: 4200 PSI
Machine was very powerful and worked well. Until about 8 minutes in. Pool of milky oil and water mix running down my driveway. Shut the machine off immediately. I purchased the machine in February due to availability concerns. I installed an hour meter on it, and then used it for the first time on April 21 due to the cold weather in the midwest. Got 8 minutes out of an almost $1,100 machine. If it worked like it was supposed to, it would an incredible machine. I registered the machine with Simpson, but I didn't find a way to contact support on Simpsons site. Extremely frustrating. I had more hope for what "Made in USA" meant. I cannot recommend this machine. ... show more
Reviewed in the United States on April 23, 2022 by Chris
    • Great machine
Style: 4200 PSI
Wonderful machine. Runs well and does a great job of getting things clean quickly. The handles were easily snapped on and assembly was easy. Seems to be an awesome piece of equipment. I’m very happy with it.
Reviewed in the United States on September 22, 2025 by Dan Allen
    • Pressure Washer
Style: 3500 PSI
I recently purchased this pressure washer, and it has exceeded my expectations in terms of performance and ease of use. The setup was simple and straightforward, and it was ready to go within minutes. The motor provides strong, consistent power, making it easy to tackle everything from cleaning my driveway and patio to washing the siding on my house. One feature I really appreciate is the adjustable spray nozzles. Switching between high pressure for tough stains and a gentler spray for more delicate surfaces is quick and convenient. The hose is a good length, which allows me to move around without constantly relocating the unit. Noise levels are reasonable for the power it delivers, and the compact design makes it easy to store when not in use. My only minor complaint is that the hose can kink if you’re not careful, but once you get used to handling it, it’s manageable. Overall, this pressure washer offers great value for the price. It saves me a lot of time on outdoor cleaning jobs and makes tough tasks feel effortless. I would definitely recommend it to anyone looking for a reliable, easy-to-use pressure washer. ... show more
Reviewed in the United States on September 4, 2025 by A Mitchell
    • great washer
Style: 3500 PSI
Works great and plenty of pressure. But you have to bend over to move it as handle is too short. I spend most of the time messing with the hose as it wants to go back to the original shape.
Reviewed in the United States on May 5, 2025 by terry ellefson
    • honda pressure washer is great
Style: 3500 PSI
started right up, works great, good on gas, not too big and easily portable, hose is good length!
Reviewed in the United States on September 23, 2025 by Donna Garman

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...