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4090HMK103/20 Wheeled Gas Air Compressors

Model 4090HMK103/20 is the step up from our classic 163 cc (GX160) gas twin-tank wheelbarrow air compressor. Featuring a single 20 gallon tank assembly, the 4090HMK103/20 sustains 8.7 CFM @ 90 PSI longer than the traditional 9 gallon twin tank design. It incorporates an automatic idle-down for increased fuel efficiency and an atmospheric unloading system to prevent oil consumption.

Optional Equipment: Filter-Regulator-Lubricator Sets.

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  • Heavy Duty
  • Two Cylinder
  • Single Stage
  • Splash Lubricated
  • High-Efficiency Reed Valve Design
  • Aluminum Alloy Connecting Rods
  • Multi-Finned 10" Flywheel
  • Oil Sight Gauge and 17 oz. Oil Reservoir


  • 163 cc (5.5 HP) Honda 4 Cycle
  • Complete Die Cast Aluminum Alloy with Cast-Iron Sleeve
  • Overheard Valves
  • Retractable Starter
  • On/Off Switch
  • Splash Lubricated
  • Low Oil Shutdown


  • Pressure Gauge 0-200 in 5 lb. Graduations
  • Automatic Pilot Valve Operation
  • Industrial Flexible Discharge Hose
  • Automatic Idle Control for Economy and Long Service Life
  • Intake Filter with Silencer and Replaceable Element
  • Schmidt Belt Tightening Device
  • Totally Enclosed Steel Belt Guard
  • Safety Relief Valve


Horse Power 163 cc (5.5 HP)
CFM Displaced 11.7 CFM
CFM Delivered 8.7 CFM @ 90 PSI
Overload Protection No
Lubrication Type Splash Lubrication
Pump Oil Capacity 17 oz.
Reed Valve System Yes (Standard)
Number of Cylinders 2
Tank Capacity 20 Gallons
L X W X H 47"x22"x34"
Decibel Rating Unavailable
Country Of Origin Compressor Origin.pdf
Shipping Weight 198 lb.
Shipping Dimensions (L X W X H) 47" x 23" x 39"