Simpson Honda GX390 Water Blaster 4200-PSI-GPM Belt Drive Gas Pressure Washer-WB4200 - The Home Depot


Model # WB4200

Internet # 100619434

Honda GX390 Water Blaster 4200-PSI-GPM Belt Drive Gas Pressure Washer

Simpson Honda GX390 Water Blaster 4200-PSI-GPM Belt Drive Gas Pressure Washer

This item has been discontinued.
The Home Depot no longer carries this specific product.

$1,699.00 / each


Model # WB4200

Internet # 100619434

Created for commercial and industrial use, the Simpson Water Blaster Series is simple to use and designed for the heaviest of cleaning. Perfect for paint preparation, professional cleaning services, graffiti removal, industrial jobsites, and fleet maintenance. Equipped with commercial series HONDA GX OHV engines that are built with high-quality components and designed for optimum performance in the harshest environments. Heavy duty industrial triplex plunger pump design with ceramic pistons and thermal relief valve for long life. Its dual-belt system separates the engine and pump, preventing overheating and pump fatigue, resulting in greater efficiency and longer engine and pump life.

California residents: seeProposition 65 information

  • HONDA GX390 OHV commercial series engine with Oil Alert - Engine oil is included
  • AAA by Comet industrial triplex plunger pump design with ceramic pistons and thermal relief valve for long life
  • Dual belt-drive system for longer pump and engine life
  • 3/8 in. x 50 ft. high pressure steel-braided hose is non-marring, kink and abrasion resistant, and equipped with quick connectors
  • Double frame construction
  • Pro-style spray wand with 5 quick connect nozzle tips- 0°, 15°, 25°, 40°, and soap applicator nozzle
  • Professional spray gun with safety lock-out
  • 13 in. premium pneumatic tires with mag type wheels
  • Downstream detergent injection system for use of cleaners
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.)  46 in  Assembled Height (in.)  24 in 
Assembled Width (in.)  26 in  Hose Diameter (In.)  3/8 in 
Hose length (in.)  50  Wheel Diameter (in.)  13 in 
CA (CARB) Compliant  CARB Compliant  Commercial  Yes 
Detergent tank  No  Engine Displacement (cc)  390 
Engine Make  Honda  Engine Type  HONDA GX390 Commercial Series OHV Engine with Oil Alert® 
Foldable handle  No  Fuel tank capacity (gallons)  1.6 
GPM  3.5  Hazardous Code  RTS - May Contain Liquid If Returned 
Hose Material  Other  Maximum Pressure (PSI)  4200 
Number of tips included  Onboard storage  Yes 
PSI Range  3200+ PSI  Pressure Washer Power Type  Gas 
Product Weight (lb.)  138 lb  Pump Brand  Other 
Pump Type  Triplex  Reconditioned  No 
Returnable  30-Day  Start Type  Manual 
Translucent fuel tank  No  Water capability  Cold 
Wheels  Yes 
Warranty / Certifications
Manufacturer Warranty  Limited Warranty - Commercial Use - 3 Years on HONDA GX engine, 5 Years on AAA by Comet pump, 1 Year on frame components, 90 Days on spray accessory items 


Rated 5 out of 5 by 1 reviewer.
Rated 5 out of 5 by Excellent Pressure Washer I have always purchased the high-end consumer 2800 to 3000 PSI Washers for about $500 and did not see the need for a larger unit, but I have a lot of concrete and a large fence that I wash every year. The standard units blew up about every 3 years so I just threw it out and bought another one, still cheaper than paying someone else. I finally decided to purchase this pressure washer (a real one) and I am very happy I did, jobs take 1/2 the time and the cleanup is a much better job, well worth the price. But your arms will be sore from using this machine because it is so powerful, but a lot of fun to use. I think I sold 3 more of them while I was using it; all my neighbors were coming over and asking where I purchased it. May 29, 2010
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Curbside Truck Shipping (By Appointment) includes delivery to receiving area/dock for businesses or curbside for residential orders. The carrier will contact you to make a delivery appointment with a 4 hour window once the items have arrived at the local hub in your area. Delivery appointments are required.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.