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Dewalt DH4240B 4,200 PSI Belt Drive Commercial Gas Pressure Washer
Model#: DEWNDH4240B
Condition: New

Dewalt DH4240B 4,200 PSI Belt Drive Commercial Gas Pressure Washer

Model#: DEWNDH4240B
Out of Stock
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A heavy duty pressure washer, this unit is for professional or do-it-yourselfers with a lot of surface area that needs constant cleaning. Provides the quickest and cleanest results for extremely large areas and heavily soiled areas. These units will do all of the medium or light-duty jobs PLUS remove oil stains, wash the siding on your house and even remove graffiti!
  • Honda GX390 Commercial Series OHV engine with Oil Alert provides consistent, powerful performance
  • 4,200 PSI water pressure delivers intense cleaning power
  • 4.0 GPM flow rate ensures efficient cleaning
  • General Pump triplex plunger pump with adjustable unloader offers commercial-grade performance
  • Five quick-connect tips allow for rapid nozzle changes
  • 3/8-in x 50-ft heavy-duty, dual-braided, non-marring, high-pressure hose with quick connectors for easy and secure connections
  • Two 13-in wheels allow for maneuverability on the job site
  • 10-Gauge frame provides a sturdy platform
  • 1.6 gallon fuel tank for enough capacity to finish your projects
  • Includes heavy-duty spray gun and lance
  • Dual-belt structure is engineered to sustain positive redundant power transfer from the engine to the pump
  • 4,200 PSI Belt Drive Commercial Gas Pressure Washer - DH4240B
  • 50-ft Steel Braided Hose
  • Professional Spray Gun
  • Lance


Length: 33 in.
Width: 27 in.
Height: 27 in.
Weight: 175 lbs.
Best Uses: Oil Stains, Siding, Graffiti Removal
Chemical Injection: Siphon Tube
Cleaning Power: 16,800 (PSI x GPM)
Engine Displacement: 389cc
Flow Rate: 4.0 GPM
Frame Type: 2 Wheel Cart
High Pressure Hose: 50-ft
Horsepower: 11.7
Hose Diameter: 3/8-in
Hose Material: Steel Braided Rubber
Motor: Honda OHV GX 390
Number of Quick Connect Nozzles Included: 5 Quick Connect Tips
Operating Pressure: 4,200 PSI
Power Type: Gas
Pump Type: General Triplex TX Commercial Series Pump
Spraygun Connection: Quick Connect
Temperature: Cold
Type: Heavy-Duty
Wheel Size: 13-in
Wheel Type: Pneumatic


  • Paint preparation and/or removal
  • Concrete forms
  • Construction equipment
  • Farm equipment
  • Exterior commercial buildings
  • Fleet vehicles
  • Reviews

    Product Reviews


    by PowerReviews
    DEWALT4,200 PSI Belt Drive Commercial Gas Pressure Washer

    (based on 1 review)

    Reviewed by 1 customer

    Displaying review 1

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    Macho machine, worth the money

    By Emmisby

    from Smyrna, TN

    About Me Handyman

    Verified Buyer


    • Easy To Operate
    • Powerful
    • Robust


    • None

    Best Uses

      Comments about 4,200 PSI Belt Drive Commercial Gas Pressure Washer:

      This product's features & performance are as advertised, machine is well suited to intense heavy-duty cleaning. Would have liked the wand to include ergonomic grip for non-trigger hand, and better brackets on machine for wand & hose. [...]

      Displaying review 1

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      Questions & Answers



      The warranty on new DEWALT pressure washers is as follows:

      DEWALT pressure washers model year 2008 (black frames) have a 2 year all components covered warranty.

      They can be returned to the retailer, with a receipt up to 30 days for an exchange or refund. After 30 days they would have to go to a DEWALT Factory service center for warranty repair. The DEWALT Factory service centers will not take anything back for an exchange, it would have to be repaired.