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Honda GX390 4,200 PSI 4 GPM Gas Pressure Washer

$112160
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$undefined.00 /mo* suggested payments with months* financingApply Now
  • Reliable high performance premium HONDA GX390 Engine
  • Maintenance free AAA Triplex Pump made by Comet
  • Steel-Braided Quick Connect high pressure hose
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$112160

Product Overview

DEWALT machines are guaranteed tough. Built tough to meet the rigorous demands of the cleaning professional or anyone who expects the most out their machine. Perfect for deck cleaning, wood restoration, paint preparation, graffiti removal and all other professional cleaning services. Our gas-powered machines are equipped with Honda Gx OHV commercial series engines. These engines set the standard for durability and long life. The Honda engines are paired with AAA industrial triplex plunger pumps, a brand with a history of over 40-years of innovation. AAATM pumps are equipped with PowerBoost, this patented technology delivers higher pressure to the spray nozzle, resulting in greater impact and cleaning performance. Exceptionally strong welded steel frame body and pneumatic tires for mobility across most any surface. Pro-style quick connect spray wands and nozzles, with professional spray gun, allows users to operate with ease. High pressure hoses are non-marring, kink and abrasion resistant and utilizes poly and/or steel-braid technologies for exceptional strength and long-life. For those extra dirty jobs, drop the detergent siphoning tube into pressure washer safe detergent and attach the soap applicator nozzle.
  • Honda GX390 OHV commercial series engine with oil alert starts easy, runs smoothly and delivers high output - engine oil is included
  • AAA by comet industrial triplex plunger pump with ceramic coated pistons and adjustable unloaded 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 for extreme durability and effortless maneuverability
  • Pro-style spray wand with 5 quick connect nozzle tips - 0, 15,25,40 and soap applicator nozzle
  • Professional spray gun with side grip designed to be comfortable and easy to operate - safety lock to prevent gun from being accidentally activated
  • Convenient on-board accessory storage for spray gun/wand, high pressure hose and nozzles
  • Downstream detergent injection system for convenient use of cleaners
  • 3-year limited commercial engine warranty, 5-year limited pump warranty, 10-year limited frame warranty, 90-day limited accessory warranty
  • Note: product may vary by store
  • Choose the best nozzle that fits your pressure washer needs:

    Pressure Washer Nozzle Selection Guide

  • California residents

Info & Guides

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current product
Honda GX390 4,200 PSI 4 GPM Gas Pressure Washer
Top Rated4200 PSI 4.0 GPM Gas Pressure Washer Powered by HONDA (49-State)
BrandDEWALTDEWALTDEWALTDEWALT
Name4400 PSI 4.0 GPM Gas Pressure Washer Powered by 420cc Engine3800 PSI 3.5 GPM Gas Pressure Washer Powered by HONDAHonda GX390 4,200 PSI 4 GPM Gas Pressure Washer4200 PSI 4.0 GPM Gas Pressure Washer Powered by HONDA (49-State)
Price
$79900
$102900
/carton
$112160
$122999
/carton
Ratings
(8)
(200)
(441)
(200)
Engine MakeOEM Branded EngineHonda EngineHonda EngineHonda Engine
Gallons Per Minute4.03.544.0
Suggested UseCar,Decking,Driveway,Grill,Paint Preparation,Patio Furniture,Siding,WindowCar,Decking,Driveway,Grill,Paint Preparation,Patio Furniture,Siding,WindowCar,Decking,Driveway,Grill,Paint Preparation,Patio Furniture,Siding,WindowCar,Decking,Driveway,Grill,Paint Preparation,Patio Furniture,Siding,Window
FeaturesChemical/detergent injection,Quick connect tipsAbrasion Resistant,Chemical/detergent injection,Quick connect tipsChemical/detergent injection,Quick connect tipsAbrasion Resistant,Chemical/detergent injection,Interchangeable wand,Quick connect tips
Start TypeRecoil StartRecoil StartRecoil StartRecoil Start
Pump TypeTriplexTriplexTriplexTriplex
Commercial / ResidentialCommercialCommercialCommercialCommercial
Water TemperatureColdColdColdCold
View ProductView ProductView ProductView Product

Specifications

Dimensions

Assembled Depth (in.)
37 in
Assembled Height (in.)
27.5 in
Assembled Width (in.)
23.5 in
Hose length (in.)
600
Interior Hose Diameter (In.)
3/8 in
Wheel Diameter (in.)
13 in

Details

Assembly Required
Yes
CA (CARB) Compliant
CARB Compliant
Commercial / Residential
Commercial
Connection Type
3/8 in. Quick Connect Hose & Trigger Handle
Engine Displacement (cc)
389
Engine Make
Honda Engine
Engine Type
HONDA GX390 Commercial Series OHV Engine with Oil Alert
Features
Chemical/detergent injection,Quick connect tips
Fuel Tank Capacity (gallons)
1.6
Gallons Per Minute
4
Hose Material
Other
Included
Onboard cord storage,Wheels
Maximum Pressure (PSI)
4200
Nozzle Type
Multi-Pattern
Number of tips included
5
Pressure Washer Power Type
Gas
Product Weight (lb.)
136.5 lb
PSI Range
3200+ PSI
Pump Brand
Other
Pump Type
Triplex
Reconditioned
New
Returnable
30-Day
Start Type
Recoil Start
Suggested Use
Car,Decking,Driveway,Grill,Paint Preparation,Patio Furniture,Siding,Window
Water Temperature
Cold

Warranty / Certifications

Manufacturer Warranty
3 Year Limited Commercial Engine Warranty : 5 Year Limited Pump Warranty : 10 Year Limited Frame Warranty : 90 Day Limited Accessory Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.4
    out of 441 reviews
  • 79%recommend this product
Filter by:
Showing 1-10 of 441 reviews
AAA pump on this dewalt pressure washer leaks all the time
purchased this and it runs fine but the sight glass constantly leaks pump oil. reached out to dewalt which told me to reach out to the pump manufacturer. turns out pump seals are not under warranty and you have to buy a 200 dollar rebuild kit to get the seal. purchased the kit and it still leaks. the seal is way to thin for the groove it sits in. Had to use gasket sealant to get it to hold oil . poor design.
by
    8 people found this helpful
    Impressive!
    This is the third DeWalt pressure washer that I have bought. The first two were the 3400 psi models. Are use these for business. They have made me thousands of dollars and have impressed many clients with how clean the machines in a surface or get their property. I did a big jobAnd knew that it would take me quite a long time with a 3400 psi so I went and bought the 4400 psi and I did a two day job in five hours. I used one 3400 psi and one 4400 and we knocked the job out quickly! I notice a huge difference between the two. I did notice that the 4400 used almost twice the amount of gas, but it is almost double in cc’s. The 3400 is a 200cc Honda engine and the 4400 is a 398cc Honda engine. When I pulled it out of the box, and put oil in it. My 11yr old Son started it first pull! I used it for 5 hrs straight with no problems.
    by
      • Recommended
      10 people found this helpful
      I buy a ton of dewalt products! Alot of products very good. But all dewalts power washers do no...
      I buy a ton of dewalt products! Alot of products very good. But all dewalts power washers do not meet expectations. The product always has parts wearing out within warranty periods, even without using the parts that control pressure and they cost 1/4 of the cost of the machine to fix. The warranty is complete and utter garbage, its written so they can cherry pick when and if they feel like warrantying the product.. The product didnt work very long when I owned it, nor when I had the part replaced twice. I suggest a different manufacturer when it comes ot power washers. Its expensive junk!
      by
        19 people found this helpful
        Great
        Works great. Start up on the second pull. Very Powerful
        by
          • Recommended
          6 people found this helpful
          Very strong machine
          Very strong machine
          by
          • Verified Purchase
          • Recommended
          2 people found this helpful
          I purchased a DeWalt 4400 PSI PW from HomeDepot on 1/7/2019. I installed psi gauges on both power...
          I purchased a DeWalt 4400 PSI PW from HomeDepot on 1/7/2019. I installed psi gauges on both power washers my Pacific HydroStar 3300 9hp power washer and the results was the DeWalt 4400 was less 700 psi and was only putting out 3700 at max output that's after adjusting the idle screw to near out. The Pacific HydroStar maxed out reading was 900 psi less from 3300 psi which was at 2400. So my guess is these PSI on power washers are a bunch of hype....lies. If you don't believe me just go to Northern Tools or order a gauge and see for yourself. I'm left feeling I didn't get what I paid for.
          by
            • Recommended
            24 people found this helpful
            Oil cap comes off easily leaving the plug in place. Is this normal or a defect in the unit I purc...
            Oil cap comes off easily leaving the plug in place. Is this normal or a defect in the unit I purchase less than a week ago?
            by
              6 people found this helpful
              Powerful & reliable. Note that it's best to use non ethanol gas. This makes starting easy.
              Powerful & reliable. Note that it's best to use non ethanol gas. This makes starting easy.
              by
              • Verified Purchase
              • Recommended
              8 people found this helpful
              Great product! Reliable and powerful! I used it to clean my house roof by down streaming bleach...
              Great product! Reliable and powerful! I used it to clean my house roof by down streaming bleach with soap. See before & after pics. Note to only use non ethanol gasoline to avoid the pressure washer startup problems.
              by
              • Verified Purchase
              • Recommended
              6 people found this helpful
              I bought the 4200 dewalt pressure washer 4 years ago and I just bought the 4400 dewalt so I could...
              I bought the 4200 dewalt pressure washer 4 years ago and I just bought the 4400 dewalt so I could warranty the pump. Still starts with 1 pull. No problem when sending to warranty. Great tool to invest in.
              by
              • Verified Purchase
              • Recommended
              6 people found this helpful
              Showing 1-10 of 441 reviews