Skip to main content


The engine and drivetrain in a natural gas vehicle function just like those powered by gasoline or diesel fuel. In fact, natural gas-powered engines burn cleaner, reducing maintenance costs and extending engine life.

Ponder the stream of high-tech advancements we’ve seen seemingly every day throughout the past decade, and it’s easy to understand how converting vehicles to natural gas can be done safely and efficiently, with reliable results.

So, how does it all work? Let’s slip behind the wheel and pull up to the fueling station.

Vehicle conversion 

Converting an existing vehicle to natural gas requires no modifications to any major engine parts or the drive train.

Prices for conversion kits and installation have decreased as the number of NGVs on the road has increased. Kits are available for new and used vehicles fulfilling nearly every function and most duty ratings. If it runs on gasoline or diesel fuel, it’s well on the way to qualifying for conversion.

Fueling options 

  • Dedicated - burns only Compressed Natural Gas
  • Dual Fuel - burns a blend of CNG and diesel fuel
  • Bi-Fuel - automatically switches between CNG and gasoline/diesel fuel

​Added or replaced parts 

  • On-board CNG storage tank: the natural gas storage tank is much thicker and stronger than gasoline or diesel tanks and meet the most stringent safety standards in the world.
  • A regulator attached to the storage tank to reduce tank pressure from 3,600 psi down to 125 psi.
  • Fuel lines and fittings
  • A wiring harness
  • Electronics to monitor air/fuel mixture
  • Fuel injectors

New vehicles 

We can help you determine your best option and streamline the purchase process by getting you together with the right people at the right time. A number of light-duty NGV options are available through local dealerships from several original equipment manufacturers. For example:

  • Honda Civic Natural Gas Sedan (dedicated)
  • GM Impala Sedan (bi-fuel)
  • GM Silverado/Sierra Pickup (bi-fuel)
  • GM Express/Savana Cargo and Passenger Vans (dedicated)
  • Ram 2500 Dual-Cab Pickup (bi-fuel)

Ford also offers an option on its F-Series trucks and its Transit and Transit Connect vans. Small-Vehicle Modifiers offer light-, medium- and heavy-duty options. These approved systems can be installed on both new and used vehicles.

Cummins Westport currently offers 8.9 liter and 11.9 liter natural gas engines for a variety of applications, from refuse trucks and transit buses to cement trucks and long-haul tractors. Cummins Westport is developing a 6.7 liter natural gas engine to support the medium-duty vehicle market, such as delivery trucks, school buses and shuttles. Be sure to ask for an update when you contact us.