Back-of-cab CNG fuel systems

Our ProCab® CNG fuel systems are installed behind the cab and are available in a range of sizes from 60 diesel gallon equivalent (DGE) to 175 DGE.

Long range

Our 175 DGE ProCab fuel system allows up to 700 mile range before re-fueling. ProCab can be combined with our ProRail® side-mount systems for a maximum of 295 DGE, allowing over 1,200 mile range before re-fueling.


Our ProCab fuel system has over 1 million miles in the field, is made of aircraft-grade aluminum, and is mounted on rubber isolators to reduce stress on components.


Patented Drive-Away-Protection system disconnects ignition circuit when fuel caps are not in place or fill panel door is ajar. Integrated pressure relief devices for fire safety.


interchangeable with CNG

1 million miles

in the field


faster fill up


increase fuel economy with TruckWings™

Download specifications (4)

ProCab® CNG fuel systems

ProCab® CNG fuel systems - Europe

ProCab® CNG fuel systems - Latin America

ProCab® CNG fuel systems - Latin America

Get in touch

Hexagon Agility
3335 Susan Street, Suite 100
Costa Mesa, CA 92626 USA

T: +1 949 236 5520