UNDERHOOD® 40 Air Compressors – Van Series

The UNDERHOOD® 40 rotary screw air compressor system is the only solution for commercial vans and operators who use small air tools for light duty applications. It is the only air compressor that solves common safety issues found with traditional air compressors in vans.

UNDERHOOD40 Logo_Red&Black

VMAC engineers van mounting kits for the easiest possible installation. Working closely with leading van manufacturers, VMAC ensures that mounting kits do not affect OEM warranties.

Mounting kits available for:

ford-logo   Mercedes benz logo       Freightliner-logo

  • Ford Transit EcoBoost Gas
  • Ford Transit PFDi Gas
  • Mercedes-Benz Sprinter Turbo Diesel
  • Freightliner Sprinter Turbo Diesel

Some applications are restricted to specific series and/or models. Please confirm compatible vehicles on VMAC’s Application List.

Applications – Common jobs that use the UNDERHOOD40 air compressor are:

  • Tire servicing
  • Utility servicing
  • Forklift repair

Commonly used air tools – UNDERHOOD40 air compressors can be used for:

  • 3/4“ impact wrenches
  • Light chipping hammers
  • Die grinders
  • Tire inflation

UNDERHOOD® 40 Air Compressors Benefits

Free Up To 10 Cubic Feet In Your Cargo Area

UNDERHOOD40 air compressors free up to 10 cubic feet in the cargo area because the air compressor mounts in the engine compartment. The only space required in the cargo area is 1.7 cubic feet for a combined air/oil cooler and air/oil separator tank.

Reduce Vehicle GVW By Up To 290 lb

UNDERHOOD40 air compressors reduce van GVW by as much as 290 lb. Choosing a lightweight air compressor means you’ll be able to add more tools and equipment to your van, carry more materials, or take advantage of better fuel economy.

Up To 40 CFM*, 100% Of The Time

UNDERHOOD40 air compressors use patented rotary screw technology designed to run at 100% duty cycle without stopping, so operators don’t have to wait for their air compressor to fill up a large air receiver tank.

Eliminate Common Safety Issues

UNDERHOOD40 – Van Series air compressors are the only 40 CFM air compressors specifically engineered to eliminate safety hazards that van operators face, including lifting injuries, toxic fume exposure, and gas fires inside the cargo area.

UNDERHOOD® 40 Air Compressors Components

VMAC Air Compressor

Oil-injected rotary screw; up to 40 CFM* @ 100 psi; 100% duty cycle; up to 150 psi


The Waste Heat Air Separation Package (WHASP) Tank is an integrated cooler/tank that cools and separates the air/oil mixture and mounts in the cargo area on your van

Interface Panel

Easy to read hour meter; on/off controls with indicator light

Throttle Control

Two-speed operation; digital throttle control connects to OBD2 CAN bus connector**, automatically modulates engine RPM depending on air usage; high idle adjustment

UNDERHOOD40 Air Compressors Specifications

Air Compressor Output
  • Up to 40 CFM* @ 100 psi (150 psi max)
Air Compressor Type
  • Belt-driven, 100% duty cycle, VMAC oil-injected rotary screw
Total System Weight (wet)
  • Approximately 85 lb (38.5 kg)
Interface Panel
  • Easy to read hour meter
  • On/off controls with indicator light
  • Combined air/oil cooler, air/oil separator tank
  • 19.75” (l) x 8” (w) x 17.5” (h); 44.5 cm (l) x 20.3 cm (w) x 50.2 cm (h)
Throttle Control
  • Two-speed operation; digital throttle control connects to OBD2 CAN bus connector**, automatically modulates engine RPM depending on air usage; high idle adjustment
Safety System
  • Electro-magnetic clutch
  • Compressor thermal protection circuit
  • Automatic rapid blow-down valve on tank
  • 200 psi pressure relief valve
Air Receiver Tank (required, not included)
  • Minimum 6-gallon air receiver tank required for best performance
  • Two years on all major components; VMAC air-ends are covered by VMAC’s Lifetime Warranty (Limited); for details, visit www.vmacair.com/warranty

*Actual maximum CFM output of the air compressor varies by vehicle application. See Application List for details.

**2019-2022 model year vans only

UNDERHOOD® 40 Air Compressors Downloads


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