Cummins On-Highway Truck Engines
Heavy-duty Truck Engines

 

The X15 and X12 lineup is our best yet—giving you the power to perform, deliver, and save.

Choose what powers your engine

fuel-agnostic video thumbnail with words for the love of the planet

Innovation. Technology and Services

Cummins' New Low-Carbon Fuel-Agnostic Engine Platform Strategy

The new Cummins fuel-agnostic internal combustion powertrain solutions are an industry-first, helping fleets decarbonize with low-carbon fuels for fleet
 

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Have it all with the 2024 X15 and X12 powertrain lineup.

With a focus of uptime, total cost of ownership and ease of operations, the Cummins heavy-duty platforms bring you the best 15-liter and 12-liter engines yet. Starting with the most reliable 15-liter ever produced, to offering EX ratings for enhanced driver performance, the X15 and X12 give you the confidence needed to improve your business without sacrificing anything.

savage trucking customer testimonial video thumbnail

"The real world is the lab that matters"

—Devon Simper, Operations Manager for Savage Trucking


The Cummins X15 answers our fleet partners' needs for reliable and durable performance. Take it from Savage Trucking—the Cummins X15 engines enable their trucks to pull 129,000 pound loads at altitudes 9,000 feet above sea level across the American West.

Watch how Cummins pushes their fleet to maximize performance and efficiency.

Play Savage Trucking testimonial video
x15n engine

Featured Heavy-duty engine

X15N

Discover the industry’s first big bore natural gas engine that delivers solutions for a range of long-haul applications. With power ratings up to 500 hp and torque up to 1850 lb-ft, this engine will revolutionize transportation and your application needs.

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Power under weight-sensitive applications

2024 x12 engine product

Featured Heavy-duty engine

X12 (2024)

The X12 is designed to give weight-sensitive applications maximum payload. And at just 2,050 lbs., the X12 is at least 150 lbs. lighter than the lightest competitive 11L engine, yet it still delivers powerful performance from 350-500 HP and 1250-1700 lb-ft Torque. With the response and power of larger displacement engines, the X12 delivers the performance drivers desire while maximizing efficiency for every job.

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The future of energy transition

Transportation has evolved since the beginning of time. What does the future of transportation hold?

Watch three factors shaping the future

Going further, faster

Destination Zero

It’s our mission to power a more prosperous world.

We do this by helping customers succeed through innovative and dependable products that are good for our customers and the environment.

Learn more about Destination Zero

Learn about tomorrow - today

x15 next gen engine

Featured Heavy-duty engine

The Next Generation X15

Introducing the next generation X15. The next step in the Cummins fuel-agnostic 15-liter platform. Offering up to 605 hp and 2,050 lb-ft torque, this engine demonstrates our continues commitment to the evolution of internal combustion technology. 

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x10 engine

Featured Heavy-duty engine

X10

Introducing the new Cummins X10, a next generation engine that brings a state-of-the-art platform to medium-duty, heavy-duty, vocational, and transit bus applications, launching in North America in 2026. This engine is uniquely positioned to replace both the L9 and X12.

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Parts and Service

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