Proven reliability and durability
Our medium-duty truck engines have been tested and proven over the course of more than 30 years, so it’s no wonder how we power more trucks any other engine. No one can touch the proven track record of performance on our unparalleled medium-duty lineup, and no one comes close to Cummins service and support. Others talk a big game, but only we deliver bigtime uptime.
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Featured medium-duty engine
B6.7 Octane
Introducing the Cummins B6.7 Octane, purpose-built to deliver the highest durability and longest life of any medium-duty gasoline engine on the market. Expanding the legacy of the Cummins B-series platform, the B6.7 Octane is designed to deliver an unmatched combination of performance, drivability and a lower total cost of operation than any gasoline engine in the market today.
Featured medium-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. This engine is uniquely positioned to replace both the L9 and X12.
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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