Cummins Launches X10 Engine Platform
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Cummins Inc. continued to overhaul its engine options for medium- and heavy-duty trucks, unveiling the X10 engine platform and a B-Series engine update in recent days.
Columbus, Ind.-based Cummins’ introduction of the X10 followed a revamp of the flagship heavy-duty X15 engine lineup around 12 months ago, including rolling out the X15N natural gas configuration.
The X10 platform is set to replace both L9 and X12 engines in 2027, and like the X15 will be available with a variety of fuel options as part of Cummins’ High Efficiency, Lower emissions, Multiple fuels (HELM) program, the engine maker said Feb. 28.
The various offerings are derived from a base engine, which means they have some common parts. Below the head gasket the engine variants will largely have similar components, but above the head gasket components will vary based on fuel type.
“We’re incredibly proud to introduce the X10,” said Jose Samperio, vice president of North American on-highway engine business. “Designed to replace the L9 and X12 platforms, the X10 brings robust capabilities, exceptional durability and unmatched versatility to customers looking for heavy-duty performance in a more compact, efficient package.”
The X10 comes in two ratings: a heavy-duty option of up to 450 horsepower and 1,650 pound-feet of torque and a medium-duty package with up to 380 horsepower and 1,250 pound-feet of torque.
To be more attractive to vocational truck customers, the X10 offers power take-off capability of 590 pound-feet continuous and up to 664 pound-feet intermittent.
Cummins is showcasing the engine for the first time in its own backyard at the March 4-7 Work Truck Week conference in Indianapolis.
The X10 platform is set to replace both L9 and X12 engines in 2027. (Cummins Inc.)
Also in Indianapolis, Cummins on March 5 unveiled an addition to its B-Series platform, the B7.2 diesel engine, production of which also will start in 2027.
The new engine will feature a slightly higher displacement of 7.2 liters and provide 240 to 340 hp and 650 to 1,000 pound-feet of torque.
Additionally, the new engine will be automatic engine shutdown and stop-start capable for improved greenhouse gas emissions, and offer a compression release engine brake and extended oil drain interval pan option.
Meanwhile, Kenworth showcased the Cummins B6.7 Octane engine for the first time in Indianapolis. The new gasoline engine is set to be certified for the Environmental Protection Agency’s planned 2027 emission regulations.
The gasoline engine will be available for order later this year for Kenworth’s line of Classes 5-7 conventional trucks.
Kenworth partnered with customers to design a line of trucks that delivers best-in-class durability, maneuverability, visibility and customization across Class 5, 6, 7 and 8. Discover yours at https://t.co/t6HbEc1R0d#Kenworth #KWMediumDuty pic.twitter.com/TMgTDIqECi — Kenworth Truck Co. (@KenworthTruckCo) February 24, 2025
The Cummins gasoline engine provides diesel-like performance with horsepower ranging from 200 to 300 hp with up to 660 pound-feet of torque and is paired with the Paccar TX-8 automated transmission.
“The engine was validated against the same standards as Cummins diesel B6.7 engine,” said Kevin Haygood, Kenworth’s assistant general manager for sales and marketing. “With environmental regulations changing, it spurred us to offer another engine option to our customers.”
“The new Cummins B6.7 Octane engine will meet stringent emission regulations, so we expect it to be a popular option in California and other states that have adopted [the California Air Resources Board’s] standards,” Haygood said. “It can be a great fit for many of our customers’ applications, especially in P&D, and towing applications. We also see it being popular for the lease and rental markets, as well as for landscapers, where those behind the wheel are used to driving gas-powered vehicles.”
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