The DEWALT DXPW4240 is a direct-drive professional pressure washer powered by a Honda® GX390 commercial-series engine and an AAA industrial triplex plunger pump rated at 4,200 PSI and 4.0 GPM—16,800 cleaning units. Built for contractors and professionals who demand peak cleaning performance, it features a 50 ft. steel-braided hose, five quick-connect nozzles, and a welded steel frame with pneumatic wheels for jobsite mobility.
What does 'direct drive' mean on the DXPW4240?
Direct drive means the pump shaft is coupled directly to the engine crankshaft, which eliminates the belt-and-pulley assembly found on belt-drive machines. Direct drive results in a more compact, lighter unit, though it does run the pump at engine speed, which can generate slightly more pump heat during extended operation.
What is the Honda GX390 engine?
The Honda GX390 is a 389cc commercial-series OHV engine producing approximately 11.7 HP. It is well regarded for easy starting, reliability under continuous load, and Honda's Oil Alert® low-oil shutdown system that protects the engine from damage.
Is the DXPW4240 appropriate for commercial cleaning operations?
Yes. At 4,200 PSI and 4.0 GPM (16,800 cleaning units), the DXPW4240 is designed for professional and commercial use including fleet washing, building washing, deck stripping, graffiti removal, and heavy equipment cleaning.
What nozzles come with the DXPW4240?
The DXPW4240 includes five quick-connect nozzle tips: 0°, 15°, 25°, 40°, and Soap (low pressure). Each tip creates a different spray pattern suited to tasks ranging from precision blasting to gentle soap application.
How does the DXPW4240 compare to the DH4240B?
Both models deliver 4,200 PSI at 4.0 GPM with a Honda GX390 engine and AAA triplex pump. The primary difference is the drive system: the DXPW4240 uses direct drive while the DH4240B uses belt drive. Belt-drive units run the pump at lower RPM for cooler, quieter operation and slightly longer pump life.
What warranty covers the DXPW4240?
The DXPW4240 is backed by a 3-year limited warranty covering defects in materials and workmanship. The Honda GX390 engine also carries a separate Honda commercial engine warranty.
# DEWALT® Direct Drive Pressure Washer (4200 PSI @ 4.0 GPM) **Model:** `DXPW4240` **Brand:** DEWALT **Category:** Pressure Washer > The DEWALT DXPW4240 is a direct-drive professional pressure washer powered by a Honda® GX390 commercial-series engine and an AAA industrial triplex plunger pump rated at 4,200 PSI and 4.0 GPM—16,800 cleaning units. Built for contractors and professionals who demand peak cleaning performance, it features a 50 ft. steel-braided hose, five quick-connect nozzles, and a welded steel frame with pneumatic wheels for jobsite mobility. ## Specifications | Attribute | Value | |---|---| | Product Type | Gas Pressure Washer | | Power Source | Gas | | Cordless / Corded | Corded | | Psi Max | 4,200 | | Gpm | 4 | | Engine | Honda GX390 OHV | | Engine Cc | 389 | | Pump Type | Triplex | | Hose Length Ft | 50 | | Weight (lbs) | 139 | | Country of Origin | | | Barcode (UPC) | | | Warranty | 3-year limited | ## What's Included - (1) Direct Drive Pressure Washer (4200 PSI @ 4.0 GPM) Source: https://www.jaspecs.com/dewalt/pressure-washer/dxpw4240-dewalt-direct-drive-pressure-washer-4200-psi-40-gpm/