Honda GX390 12HP-4GPM-3500PSI
By : Water Cannon

SKU : 11H80
Price Per Item
2 + $1,459.22
Click to Select:
  • AR Triplex Pump - Honda GX 390 - Portable V-Belt Drive - 4.0GPM @ 3500PSI - 50' Attachment Kit - 11H80 - $1,674.00 (Ad Match Guarantee - Buy Now: $1,489.00)
  • CAT Triplex Pump - Honda GX 390 - Portable V-Belt Drive - 4.0GPM @ 3500PSI - 50' Attachment Kit - 11H82 - $1,894.00 (Ad Match Guarantee - Buy Now: $1,675.00)
  • General Triplex Pump - Honda GX 390 - Portable V-Belt Drive - 4.0GPM @ 3500PSI - 50' Attachment Kit - 11H84 - $1,616.00 (Ad Match Guarantee - Buy Now: $1,519.00)
Water Cannon pressure washers are highly beneficial cleaning systems for virtually any residential, commercial, or industrial user.  

The more powerful pressure washers with pressure levels up to 7000psi can accomplish tasks that most cleaning equipment can't even touch, like stripping paint, degreasing heavy-duty equipment, and removing the most stubborn oil, dirt, grime, and soil residues from concrete, walkways, driveways, sidewalks, brick, building exteriors, and much more. Specially designed accessories can make any pressure cleaning job easier and more efficient.  

Water Cannon stocks a complete line of pressure washer surface cleaners including Whisper Wash, Legacy, Sidewinder, Mosmatic and the best selling surface cleaner line General Pump. Pressure washing surface cleaners comes in a variety of styles like hover type, hand held and casters or wheels. With the spinning bar of two or four nozzles you get exacting cleaning performance and 2000 + rpm™s of high efficiency cleaning up to 15 times faster than a regular spray nozzle. 

For paint stripping or barnacle removal we recommend adding a rotating nozzle to your system. The turbo rotating nozzle increases the blasting power by concentrating a zero degree stream of water into a 25 degree high rpm pattern. Water Cannon supplies to the pressure cleaning industry a full line of rotating nozzles including RotoJet, HydroJet by MTM Hydro, Legacy, Dirt Killer, Annovi Reverberi and the best selling General Pump Rotomax which has an adjustable fan feature from 5 to 25 degrees.

Water Cannon now carries this 3500 PSI gas pressure washer which is highlighted by a Honda GX 390 engine that gives you all of the power you need. You get the popular Honda 13 HP GX390 engine and the option to choose between 3 powerful 4000 PSI pumps: The Cat 5CP series pump, Annovi Reverberi RK series pump or General TS series pump.

This Water Cannon Pressure Washer includes an Upgraded External Recirculation Plumbing Feature that cools the water while the trigger gun is closed. The extended service life Triplex Ceramic Plunger Pump holds up to commercial and professional daily use. Additionally this model includes an overheat safety valve that will open and close automatically to allow the recalculating higher temperature water to be released and allow cool water to replace it, helping to protect the wear parts. There is an optional Adjustable Pressure & EZ Start Feature available SKU 11234 available by calling 1-800-333-9274 and speaking with one of our industry trained sales team.
The aircraft grade aluminum frame carries a Lifetime-Guaranteed Warranty, enhancing this great investment.

Don™t forget to consider a Hot Water Hot Box, to Make Your Current Washer's Water Hot. Give your pressure washer the boost it needs by adding a hot water hot box. This will allow you to use your equipment for an even wider variety of applications.

• 3500 PSI Pressure Washer
• Honda 13 HP GX390 engine with 3 year warranty: Click here for complete details
• Available with your choice of Annovi Reverberi pump, Cat pump or General pump with 5 year warranty.  (Please note, washer is pictured here with the General pump).
Standard Features
• Revolutionary aircraft grade aluminum frame with dual handles (no welds to fail)
• Lifetime frame warranty
• 50 mesh stainless steel inlet filter
• Adjustable pressure throttle
• 10" Over-sized pneumatic tires
• Dual padded shock absorbing feet
• 3/4" cold-rolled steel axle
• Thermo-sensor (prevents overheating in bypass mode and protects pump from damage)
Standard Accessories
• 50' Hose
• Trigger gun and wand
• Soap/chemical nozzle injector system
• 4 color-coded QC spray nozzles
• 1 color-coded QC chemical nozzle
Download Operator's Manual Here
View Honda Engine's Limited Warranty

Our models pass a 15 point inspection factory assembled, tested in the USA and delivered professionally boxed for home delivery ready to operate, we even ARMOR ALL the tires!

Pressure Washer - Honda GX 390 - Portable V-Belt Drive - RK Series AR Triplex Plunger Pump - 4.0GPM - 3500PSI - 3+5+ Lifetime Manufacturer's Warranty - 50' Hose, Trigger Gun, Wand, Chemical Injector, & QC Nozzles - Assembled in USA
Honda GX Engines
• We begin with a 3 year engine warranty
• Including highly desirable and intelligent features:
• OHV - Over Head Valve Design First Pull Starting
• Automatic Decompression
• Low Tone muffler with heat shield
• Adjustable throttle
• CARB - EPA3 - Can be sold in all 50 States
• Low Vibration and great fuel economy
• Fuel tanks have an EPA approved fuel cap
• Downdraft style carburetor - no priming
• Nationwide Service Centers

Helpful tips to keep your pressure washer pump operating at peak performance

Warning California Proposition 65
Detectable amount of chemicals known to the State of California to cause cancer, birth defects or other reproductive harm may be found in pressure washing equipment, accessories and exhaust. For More Information Visit
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Water Cannon ships via UPS with delivery to the lower 48 states of the United States. When you purchase any items from Water Cannon, we will email you a receipt with tracking information so you can track your shipment.

We are currently offering FREE SHIPPING and handling on PREPAID orders over $35.00.* This free shipping rate applies to prepaid orders only, paid via credit card, fax checks, etc. For orders placed by phone or online that are under $35.00, a shipping charge of $15.30 will be applied.

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