Graco G-Force II 4040 HC-DD Direct Drive Pressure Washer - 25N678

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Quick Overview
The most reliable pumps in the industry The most durable, longest-lasting pumps available 2X longer life than other pumps
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Ideal for large commercial or industrial contractors, the G-Force II 4040 HC-DD pressure washer is Graco’s top-of-the-line direct drive unit. The premium CAT water pump and reliable Honda engine easily handles tough, all-day cleaning and surface preparation jobs.

  • Premium CAT Water Pump
    • The most reliable pumps in the industry
    • The most durable, longest-lasting pumps available
    • 2X longer life than other pumps
  • Honda® Engine
    • Reliable, powerful & easy-to-start
    • Oil Alert shuts down engine to prevent damage if oil level drops too low
    • Thermal sensor prevents pump from overheating in bypass mode
  • External Pressure Unloader
    • Trouble-free, adjustable pressure
    • Ability to match application requirements
    • Keeps water cooler and prolongs pump life
  • EZ Start Pressure Relief For Easier Starting
    • Allows water bypass pump to eliminate pressure build-up in the system
    • No need to pull the gun trigger while starting the washer
    • Standard Graco feature
  • 100% Heavy-Gauge Aluminum Frames
    • Up to 40% lighter than steel frames
    • Corrosion resistant to water and chemicals
    • Standard on all Graco models
    • Lifetime Warranty
  • Direct Drive
    • Compact design with fewer components and lighter weight
    • Pump is connected directly to the drive shaft of the engine
    • Pump rpm matches that of the engine (usually around 3500 rpm)


Engine BrandHonda
Engine ModelGX390
Fuel Tank Capacity (qt)6.9
Hose Inlet Diameter (in)3/8
Hose Length (ft)50
IncludesProfessional-Grade Pressure Washer Spray Gun with Quick Connects, 36 in Pressure Washer Wand with Quick Connect, 3/8 in x 50 ft Non-Marking Pressure Washer Hose, 4 ft Chemical Injector Hose with Strainer, 0° Red Pressure Washer Tip, 15° Yellow Pressure Washer Tip, 25° Green Pressure Washer Tip, 40° White Pressure Washer Tip, Black Chemical Pressure Washer Tip
Maximum Flow Rate (GPM)4
Maximum Fluid Pressure (psi)4000
Maximum Operating Temperature (°F)145
Maximum Working Pressure (MPa)27.6
Maximum Working Pressure (psi)4000
ModelG-Force II
Motor Drive TypeDirect Drive
Pump BrandCAT
Pump TypeTriplex Plunger
Recommended Weekly Usage (Hours)30+
TypeGas Pressure Washer
Weight (lb)99

What's Included

Part No.DescriptionQtyUnit
244783Non-Marking Hose with Quick Disconnects, 3/8 in x 50 ft1ea
127529Inline Chemical Injector with QDs Kit1ea
805543Washer Spray Tip, 00041ea
805544Washer Spray Tip, 15041ea
805545Washer Spray Tip, 25041ea
805546Washer Spray Tip, 40041ea
805634Chemical Injector Washer Spray Tip1ea