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X15 HELM, Designed for the Cummins’ Fully Integrated Powertrain

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This new advanced diesel engine is Cummins’ most efficient yet, it’s the X15 HELM, designed for the Cummins’ fully integrated powertrain featuring Eaton Cummins Automated Transmission Technologies and Cummins-Meritor.

In the US,Cummins has announced it will launch its most efficient heavy-duty diesel engine ever. As the next product in the Cummins HELM 15-litre fuel agnostic platform, the diesel X15 will be compliant with the latest emissions standards.

“We have applied our decades of experience with the X15 to our next-generation product and believe these investments will serve our customers well into the future,” said José Samperio, Vice President, North America On-Highway at Cummins. “. The next generation X15 is the next evolution of technology, truly proving to the world that we never stop innovating. We are working hard to ensure the new product delivers our brand promise to customers for the important jobs they need to do every day.”

This next-generation engine is designed to have the capability to meet future emissions regulations beyond 2027 without the need for significant architecture changes. Cummins say this investment will help the company maintain technology leadership for the next decade as it continues to fund future research and development in hydrogen and alternative fuel engines, battery electric and fuel cell powertrains.

“Today, we re-introduce our fuel agnostic engine platforms with a name that captures the innovation that powers us forward: the Cummins HELM platforms,” said Jane Beaman, Vice President Global, On-Highway Business, Cummins. “With higher efficiency, lower emissions, and multiple fuels, the Cummins HELM platforms give our customers control of how they navigate their own journeys as part of the energy transition. They can choose the fuel types that work best for them, their businesses, and their goals.”

From its inception, the next generation X15 was developed with Cummins’ fully integrated powertrain in mind. The X15 architecture utilises a belt-driven, high output 48-volt alternator and aftertreatment heater solution, optimized for increasingly stringent emission standards.

The Endurant HD and XD series are optimised for the next generation X15 powertrain to work seamlessly, improving efficiency and performance while maintaining drive comfort. All with a best-in-class transmission lube change intervals up to 750,000 miles as well as remote diagnostic capabilities.



The engine is built on Cummins’ HELM fuel agnostic 15-litre engine platform. These new fuel agnostic engine platforms feature a series of engine versions that are derived from a common base engine, which means they have some parts commonality. Below the head gasket of each engine will largely have similar components and above the head gasket will have different components for different fuel types.



Each engine version will operate using a different, single fuel. The X15N, the natural gas variant, is the first engine on the Cummins HELM platforms available to North American customers.


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