Cummins On-Highway Truck Engines
The all-new 2021 X15 and X12 lineup is our best yet—giving you the power to perform, deliver, and save.
Have it all with the 2021 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.
Power under weight-sensitive applications
Featured Heavy-duty engine
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.
Choose what powers your engine
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