Simpson Honda GX390 Water Shotgun 3500-PSI 4-GPM Belt Drive Gas Pressure Washer-WS3500 - The Home Depot


Model # WS3500

Internet # 100619430

Honda GX390 Water Shotgun 3500-PSI 4-GPM Belt Drive Gas Pressure Washer

Simpson Honda GX390 Water Shotgun 3500-PSI 4-GPM Belt Drive Gas Pressure Washer

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

$2,699.00 / each


Model # WS3500

Internet # 100619430

Created for commercial and industrial use, the SIMPSON Water Shotgun 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. 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: see  Proposition 65 information

  • HONDA GX390 OHV commercial series engine with Oil Alert - Engine oil is included
  • Industrial triplex plunger pump design with ceramic pistons and adjustable unloader for controlled pressure
  • Dual Belt-Drive System for longer pump and engine life
  • 3/8” x 50’ 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” 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.)  48.5 in  Assembled Height (in.)  27 in 
Assembled Width (in.)  28 in  Hose Diameter (In.)  .375 in 
Hose length (in.)  600  Wheel Diameter (in.)  13 in 
CA (CARB) Compliant  CARB Compliant  Commercial  Yes 
Detergent tank  No  Engine Displacement (cc)  390 
Engine Make  Honda  Engine Type  GX390 
Foldable handle  No  Fuel tank capacity (gallons)  1.6 
GPM  Hose Material  Steel 
Maximum Pressure (PSI)  3500  Number of tips included 
Onboard storage  No  PSI Range  3200+ PSI 
Pressure Washer Power Type  Gas  Product Weight (lb.)  179 lb 
Pump Brand  Other  Pump Type  Triplex 
Reconditioned  No  Returnable  30-Day 
Start Type  Push  Translucent fuel tank  Yes 
Water capability  Cold  Wheels  Yes 
Warranty / Certifications
Manufacturer Warranty  Limited Warranty - Commercial Use - 3 Years on HONDA GX engine, 5 Years on pump, 1 Year on frame components, 90 Days on spray accessory items 



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.