Make the switch to natural gas engines
Natural gas engines and vehicles are among today's most mature, proven, and least disruptive low-carbon vehicle types. With our reliable and efficient natural gas engines, you'll get long-term savings and immediate regulatory compliance. Drive into the future with Cummins natural gas engines.
Justify cost
Make a smooth transition
Natural gas engines can power a more sustainable world
Cummins is committed to simplifying the energy transition and supporting your journey. With over three decades of experience, we have solutions tailored to every challenge to ensure a smooth and successful transition to natural gas vehicles.
Switching to a natural gas engine will help you meet emissions standards and save time and money through stable fuel pricing, cheaper fuel costs, and maintenance and fluid free, three-way passive catalyst aftertreatment systems.
Reduce emissions
Natural gas engines deliver the best well-to-wheel GHG reduction option and can be net carbon negative when using Renewable Natural Gas (RNG).
All Cummins natural gas engines are backed by the full service network and channel support. Familiar engine architecture means lower costs associated with upskilling technicians and re-tooling service locations.
Adjust to a different technology
Natural gas engines deliver the least disruptive alt fuel technology, with a 1-to-1 vehicle replacement ratio. They’re built on 30+ years of natural gas experience, have known maintenance practices, and are capable of multi-shift operations.
Natural gas engine technologies
With 30 years of expertise creating natural gas engine solutions, we've been at the forefront of natural gas tech. We are here to support your business.
BROWSE NATURAL GAS ENGINESLook ahead
Cleaner fuel
Power and performance with natural gas engines
Natural gas is a clean-burning fuel that decreases the emission of greenhouse gases (GHGs) and particulate matter such as carbon dioxide (CO2) and nitrogen oxides (NOx) while delivering the same kind of power and performance Cummins engines are known for.
Our engines include newly-released features that connect in-mission operations directly to maintenance and repair processes, optimizing operations and minimizing downtime.
Full integration
Cummins fully integrated powertrains provide the most complete offering of major components including engine and aftertreatment, transmission, axles, fuel delivery system, and digital features to provide the most innovative and capable solutions in the industry.
Renewable natural gas (RNG) is a carbon-neutral and sometimes even carbon-negative alternative to diesel, which even the hardest-to-abate sectors can use.
Abundance
Natural gas is widely available and less expensive than diesel and gasoline, making it a consistent fuel source independent of the global oil market.
FEATURED ENGINE
The X15N natural gas engine
The X15N engine is an industry-first natural gas engine that delivers a range of long-haul applications. Lighter than our 15L diesel models and powered by natural gas, the X15N significantly reduces emissions to meet even the most stringent regulations from the EPA and CARB regulations. With power ratings up to 500 hp and torque up to 1850 lb-ft, this heavy-duty engine brings the future of transportation to you so you can reach your environmental goals more effectively and efficiently.
Cummins X15N natural gas engines
The Cummins Inc. X15N is the most powerful natural gas engine Cummins has ever built, with a broad engine torque curve to provide flexibility.
READ MORENatural gas engine tools and resources
We're committed to creating best-in-class training and tools that empower informed decision-making.
Cummins Clean Fuel Technologies
The industry needed a complete compressed natural gas fuel system solution, so Cummins Clean Fuel Technologies created it
Meet the voluntary GHG target
Explore how even the most hard-to-abate sectors can hit greenhouse gas targets and reduce their carbon footprint.
Cummins natural gas engine updates
Check out our latest articles and press releases.

X15N and Shell Starship
August 11, 2025

Alt Fuel Truck Service
July 21, 2025
ACT Expo in Anaheim, CA
April 25, 2025
Natural gas engine FAQs
How do natural gas engines work?
How can you reduce NOx emissions in natural gas engines?
Can a diesel engine be converted to natural gas?