Kenworth News

Kenworth T680 Now Offers Endurant 12-Speed Automated Transmission Paired with Cummins X15 Engine

The Kenworth T680 on-highway flagship is now available with the new Endurant™ 12-speed automated transmission paired with the Cummins X15 Efficiency Series engine for regional and linehaul applications up to 110,000 pounds gross vehicle weight.

Endurant 12-speed Automated Transmission

Introduced by Eaton Cummins Automated Transmission Technologies, the purpose-built Endurant transmission is engineered for seamless integration with the Cummins X15 engine to provide excellent fuel efficiency, performance and low-speed maneuverability. The transmission offers engine ratings up to 510-hp and 1,850 lb-ft of torque, and weight savings up to 105 pounds less than competitive automated transmissions.

The Endurant is standard with Kenworth’s new column-mounted shifter, putting gear selection and engine brake controls at the driver’s fingertips for better ergonomics and improved performance.

Other key features include a cooler-less precision lubrication system with a 750,000-mile lube change, encapsulated sensors and wiring, and standard 8-bolt PTO opening location. The Endurant offers a 5-year/750,000-mile warranty, and a 3-year/350,000-mile clutch warranty.

Kenworth T680 Advantage

“The 12-speed Endurant automated transmission is an important technological advancement for the Kenworth T680. Fleets and truck operators will benefit from its light weight, efficiency, reduced maintenance, and driver comfort,” said Patrick Dean, Kenworth chief engineer.

Eaton Cummins Automated Transmission Technologies

Eaton Cummins Automated Transmission Technologies is a 50/50 joint venture between Eaton (NYSE: ETN) and Cummins, Inc. (NYSE: CNI). The global joint venture produces industry-leading medium- and heavy-duty automated transmission technologies, and markets, sells, and supports Eaton’s current and next generations of automated medium- and heavy-duty transmissions to OEM customers in North America. More information on the Endurant transmission is available at

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