UNDERHOOD® 70 Air Compressors

The UNDERHOOD® 70 air compressor system is the best choice for fleet managers and owners with space and weight concerns on their service trucks. The powerful rotary screw air compressor is ideal for operating small to medium sized air tools with high air demand.

UNDERHOOD 70 Logo_Red&Black

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

Mounting kits available for:

ford-logo RAM Logo GMC-logo Chevy Logo International logo

  • Ford F-250 to F-600 Power Stroke Diesel
  • Ford F-250 to F-600 Gas
  • RAM 2500 to 5500 Cummins Turbo Diesel
  • RAM 2500 to 5500 HEMI Gas
  • GMC/Chevrolet 2500HD to 3500HD Gas
  • GMC/Chevrolet 2500HD to 3500HD Duramax Diesel
  • GMC/Chevrolet C4500 to C6500 Duramax Diesel
  • International CV 515 Duramax 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 UNDERHOOD70 air compressor:

  • Commercial tire services
  • Utility servicing
  • Heavy equipment repair
  • Sign installation
  • Oil and gas mobile mechanics

Commonly used air tools – UNDERHOOD70 air compressors can be used for:

  • 1” impact wrenches
  • 60 lb jackhammers/pavement breakers
  • Backfill tampers
  • Vertical/horizontal grinders
  • Sanders
  • OTR tire inflation
  • Many other air tools/applications

UNDERHOOD® 70 Air Compressors Benefits

Free Up To 25 Cubic Feet On Your Truck Body

UNDERHOOD70 air compressors free up to 25 cubic feet on the truck deck because the air compressor mounts in the engine compartment. In fact, no components get installed on the truck deck, ensuring a clean and professional-looking truck and space for other equipment, tools, or materials.

Reduce Truck GVW By Up To 260 lb

UNDERHOOD70 air compressors reduce truck GVW by as much as 260 lb. Choosing a lightweight air compressor means you’ll be able to add more tools and equipment to your truck, carry more materials, or take advantage of better fuel economy.

Up To 70 CFM*, 100% Of The Time

UNDERHOOD70 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 an air receiver tank. This maximizes tool performance and eliminates downtime.

Avoid Frustrating Breakdowns & Maintenance Issues

UNDERHOOD70 air compressors are powered by the truck’s engine. Because they don’t have their own engine that needs constant maintenance, less time and money is spent fixing engine issues, and more time is spent on jobs making money.

Work In Any Climate

UNDERHOOD70 air compressors are proven to work in any extreme climate, making them the air compressor of choice in arctic and desert environments. The compressor is protected in the truck's engine compartment, ensuring it starts in any climate every time.

UNDERHOOD® 70 Air Compressors Components

VMAC Air Compressor

Oil-injected rotary screw; up to 70 CFM* @ 100 psi; 100% duty cycle; up to 175 psi


Liquid-to-liquid cooler integrates into truck’s cooling system and mounts under the radiator

Control Box

LCD for on/off controls; observing system status, service reminders, displays error messages and stores error codes

Air/Oil Separator Tank

Separates compressor oil from compressed air and mounts safely to truck’s frame rail

Throttle Control

Variable speed; digital throttle control connects to OBD2 CAN bus connector**; adjusts truck engine speed automatically to match air demand

UNDERHOOD70 Air Compressors Specifications

Air Compressor Output
  • Up to 70 CFM* @ 100 psi (175 psi max)
Air Compressor Type
  • Belt-driven, 100% duty cycle, VMAC oil-injected rotary screw
Total System Weight (wet)
  • Approximately 150 lb (68 kg)
Control Box
  • LCD display
  • Service notifications
  • Displays error messages and stores error codes
  • System temperature
Throttle Control
  • Variable speed; digital throttle control connects to OBD2 CAN bus connector**; adjusts truck engine speed automatically to match air demand
Safety System
  • Electro-magnetic clutch
  • Compressor over-temp sensor
  • Automatic rapid blow-down valve on tank
  • 200 psi pressure relief valve
  • Truck drive disable circuit on throttle control
  • Truck park brake safety shut-off switch on control box
  • 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+ model year trucks only

UNDERHOOD® 70 Air Compressors Downloads


Request A Quote