SIMPSON 4,200 PSI 4 GPM Gas Cold Water Aluminum Professional Pressure Washer, Honda GX390 Engine, 49-State
$1,499.99
SIMPSON 4,200 PSI 4 GPM Gas Cold Water Aluminum Professional Pressure Washer, Honda GX390 Engine, 49-State
SIMPSON 4,200 PSI 4 GPM Gas Cold Water Aluminum Professional Pressure Washer, Honda GX390 Engine, 49-State
Item # 132392199
$1,499.99
or
or
Buy Any Pressure Washer, Get 20% Off Pressure Washer Accessories
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Notice:
This Item cannot be shipped to CA.Add a protection plan
Powersport plans are not available in CA.
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SIMPSON 4,200 PSI 4 GPM Gas Cold Water Aluminum Professional Pressure Washer, Honda GX390 Engine, 49-State
Item # 132392199
Buy Any Pressure Washer, Get 20% Off Pressure Washer Accessories
$1,499.99
or
or
$84/mo.† suggested payments with 18 Months Financing or earn $74 in Rewards+ on this purchase.
Valid 9/21/2026 - 9/27/2026
Valid 9/21/2026 - 9/27/2026
Add this item to unlock free delivery!
This item is available online only
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Free standard delivery on online footwear & Clothing purchases of $49 and over.
Notice:
This Item cannot be shipped to CA.Add a protection plan
Powersport plans are not available in CA.
Neighbor’s Club Members earn points with purchases.
Designed to meet the rigorous demands of the cleaning professional, the SIMPSON Aluminum 4200 PSI at 4.0 GPM HONDA GX390 with CAT Triplex Plunger Pump Cold Water Professional Gas Pressure Washer frame is crafted of aircraft grade aluminum, making it lighter in weight than most steel frame gas pressure washer designs. This gas pressure washer is perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal and all other professional cleaning services. The pressure washer is designed for optimum performance in the harshest environments. Get the job done right with this durable gas pressure washer!3 year limited commercial engine warranty; 5 year limited pump warranty; 10 year limited frame warranty; 90 day limited accessory warranty
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 is equipped with a low oil shutdown feature
- CAT PUMPS triplex pump is equipped with an integrated unloader and thermal relief valve
- Monster hose - 3/8 in. x 50 ft. kink and abrasion resistant hose with quick connect fittings and polyurethane outer jacket
- Aircraft grade aluminum frame is lighter in weight than most steel frame designs
- Gas pressure washer has 13 in. premium tires for ease of maneuverability across various terrains
- Pressure washer has 5 quick connect nozzle tips: 0, 15, 25, 40 and soap to use for a variety of cleaning applications
- 31 in. wand lance included
- This product is not for sale in California
| Brand | SIMPSON |
|---|---|
| Country of Origin | Made in USA |
| Amperage | 0 N/A |
| Connector Size | 0 N/A |
| Cord Length | 0 N/A |
| Decibel Rating | 0 N/A |
| Duty Rating | Heavy Duty |
| Engine Brand | HONDA |
| Engine Displacement | 389cc |
| Features | Includes: gun, hose ,lance and nozzles |
| Fuel Tank Capacity | 1.61 gal. |
| Fuel Type | Gasoline |
| Hose Diameter | 3-8 in. |
| Hose Length | 50 ft. |
| Hose Material | Steel |
| Internal Pump Type | Triplex |
| Maximum Flow Rate | 4 GPM |
| Maximum Operating Pressure | 4,200 PSI |
| Nozzle Type | Multi |
| Number of Tips Included | 5 |
| Power Type | Gas |
| Pressure Rating Range | 3500 or more |
| Pressure Washer Duty Type | Heavy Duty |
| Pressure Washer Maximum Operating Pressure | 4200 PSI |
| Product Height | 29 in. |
| Product Length | 38 in. |
| Product Weight | 133 lb. |
| Product Width | 23.5 in. |
| Start Type | Recoil |
| Water Temperature Compatibility | Cold |
| Wheel Size | 13 in. |
| Manufacturer Part Number | 60688 |
Have a question?
Start typing your question and we'll check if it was already asked and answered.
1 - 10 of 15 Questions
Newest questions
Q: how is this shipped
a year ago1 Answer
- A: The machines are shipped via Federal Express. Thanks for the question, Cleaner!Anonymousa year agoHelpful?
Q: When will this be available
3 years ago1 Answer
- A: Hi there, This product cannot be shipped to CA. You can contact your local store to see if they will carry this item in the future.3 years agoHelpful?
Q: Can this model pull water from a water Tank?
3 years ago1 Answer
- A: Hi, Ralf77. Yes, the ALH4240 will draw from a tank. Thanks for the question!Anonymous3 years agoHelpful?
Q: who manufactures the CAT Triplex Plunger Pump
4 years ago1 Answer
- A: CAT Pumps.4 years agoHelpful?
Q: What is the lowest psi you can adjust this model to also can it suck from a water tank ?
4 years ago1 Answer
- A: The minimum requirements for a water supply are 20 PSI and 5 Gallons Per Minute.4 years agoHelpful?
Q: What is the horsepower of the engine on this pressure washer?
5 years ago1 Answer
- A: For additional product support, please contact the manufacture.5 years agoHelpful?
Q: can the pressure be adjusted ? does it come with cleaning siphon for detergent
5 years ago1 Answer
- A: Please see the manual for more information: https://media.tractorsupply.com/is/content/TractorSupplyCompany/tsc/product/1/32/39/21/1323921_Man1.pdf5 years agoHelpful?
Q: Is this washer Belt Driven or Direct driven ?
6 years ago1 Answer
- A: It has a belt drive system.5 years agoHelpful?
Q: Does this unit have the idle down technology when it is not spraying
7 years ago1 Answer
- A: Sunbird, i am sorry but the ALH4240 does not have an idle down featureAnonymous7 years agoHelpful?
Q: Does this have the Honda GX 390 engine? Does this product have an automatic unloader valve so I don't have to pull the trigger to start the engine?
7 years ago1 Answer
- A: GHS92, This does have a Honda GX390 and all Simpson products have an unloader valve in the system which allows for the use of a trigger gunAnonymous7 years agoHelpful?
1 - 10 of 15 Questions
Q&As
Have a question?
Start typing your question and we'll check if it was already asked and answered.
1 - 10 of 15 Questions
Newest questions
Q: how is this shipped
a year ago1 Answer
- A: The machines are shipped via Federal Express. Thanks for the question, Cleaner!Anonymousa year agoHelpful?
Q: When will this be available
3 years ago1 Answer
- A: Hi there, This product cannot be shipped to CA. You can contact your local store to see if they will carry this item in the future.3 years agoHelpful?
Q: Can this model pull water from a water Tank?
3 years ago1 Answer
- A: Hi, Ralf77. Yes, the ALH4240 will draw from a tank. Thanks for the question!Anonymous3 years agoHelpful?
Q: who manufactures the CAT Triplex Plunger Pump
4 years ago1 Answer
- A: CAT Pumps.4 years agoHelpful?
Q: What is the lowest psi you can adjust this model to also can it suck from a water tank ?
4 years ago1 Answer
- A: The minimum requirements for a water supply are 20 PSI and 5 Gallons Per Minute.4 years agoHelpful?
Q: What is the horsepower of the engine on this pressure washer?
5 years ago1 Answer
- A: For additional product support, please contact the manufacture.5 years agoHelpful?
Q: can the pressure be adjusted ? does it come with cleaning siphon for detergent
5 years ago1 Answer
- A: Please see the manual for more information: https://media.tractorsupply.com/is/content/TractorSupplyCompany/tsc/product/1/32/39/21/1323921_Man1.pdf5 years agoHelpful?
Q: Is this washer Belt Driven or Direct driven ?
6 years ago1 Answer
- A: It has a belt drive system.5 years agoHelpful?
Q: Does this unit have the idle down technology when it is not spraying
7 years ago1 Answer
- A: Sunbird, i am sorry but the ALH4240 does not have an idle down featureAnonymous7 years agoHelpful?
Q: Does this have the Honda GX 390 engine? Does this product have an automatic unloader valve so I don't have to pull the trigger to start the engine?
7 years ago1 Answer
- A: GHS92, This does have a Honda GX390 and all Simpson products have an unloader valve in the system which allows for the use of a trigger gunAnonymous7 years agoHelpful?
1 - 10 of 15 Questions
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1 to 4 of 413 Reviews .
1 – 4 of 413 Reviews
Most Recent
cvcstyl
US
Review 1
5 out of 5 stars.
Great commercial grade home power washer
a day ago
What drew me to this model was the Honda Motor and Cat pump which has shown to be the best combo out there for residential use. Easy to put together and get running. Simple to use. Fires upon first pull as a Honda should. Seemingly infinite power. Big wheels are perfect for rough terrain. Two things I wish it had was extra holders for nozzles and other tools and a more flexible hose. I get it that it allows for durability but it can be tough to pull around and untangle. Definitely pay more and get this one!
Originally posted on simpsoncleaning.com
Jason D
US
Review 1
5 out of 5 stars.
Powerful Power Washer
a day ago
This power washer is powerful! Easy to assemble and runs super smooth with the Honda engine.
Originally posted on simpsoncleaning.com
Norm4516
US
Review 1
5 out of 5 stars.
Looks gesat
2 days ago
Haven’t had opportunity to use yet but sure it will be frat
Originally posted on simpsoncleaning.com
Norm1111
US
Review 1
5 out of 5 stars.
As expected
2 days ago
Packaged well - looks great - haven’t had opportunity to use but am sure it will be gret
Originally posted on simpsoncleaning.com