Simpson SuperPro SW4440HADM 4,400 PSI Gas Pressure Washer – 4.0 GPM, 420cc Honda GX390 Engine, Roll Cage Frame

he Simpson SuperPro SW4440HADM is built for serious contractors and industrial-grade performance. This 4,400 PSI, 4.0 GPM cold water pressure washer features a powerful 420cc Honda GX390 engine paired with a professional AAA triplex plunger pump — delivering unrelenting cleaning power on job sites, construction zones, fleets, and beyond.

Housed in a heavy-duty steel roll cage frame with premium pneumatic tires, it’s designed for stability, transport, and long-term durability in demanding conditions. The 50-ft Monster hose, ergonomic spray gun, and 5 quick-connect nozzles offer flexibility and comfort, even for full-day jobs.

If you're looking for a true professional unit that won't back down from concrete, machinery, or building restoration — this is your pressure washer.

Key Features:

• Model: SW4440HADM (P/N 65206)
  
  

• Max Pressure: 4,400 PSI
  
  

• Flow Rate: 4.0 GPM
  
  

• Engine: 420cc Honda GX390 commercial-grade gas engine
  
  

• Pump: AAA Industrial Triplex Plunger Pump
  
  

• Frame: Heavy-duty steel roll cage with lift hook
  
  

• Spray Gun: Ergonomic with safety lock
  
  

• Hose: 3/8-inch x 50 ft Monster Hose (abrasion- & kink-resistant)
  
  

• Nozzle Tips: 0°, 15°, 25°, 40°, and soap nozzle (quick-connect)
  
  

• Fuel Tank Capacity: 1.6 gallons
  
  

• Water Type: Cold only
  
  

• Detergent System: Built-in chemical injection
  
  

• Wheels: 13” pneumatic tires
  
  

• Starter: Recoil pull-start
  
  

Warranty Coverage:

• Engine: 3-Year Limited Warranty (Honda GX390)
  
  

• Pump: 5-Year Limited
  
  

• Frame: 10-Year Limited
  
  

• Accessories: 90-Day Warranty
  
  

Specs at a Glance:

• Dimensions: Approx. 38.5” x 24.25” x 27.5”
  
  

• Weight: ~209 lbs
  
  

• Color: Black / Steel Gray
  
  

• Product Type: Gas-powered cold water pressure washer
  
  

• Use Case: Industrial, commercial, contractor-grade cleaning