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Kenworth T680 Available with MX-11 and Paccar Automated Transmission

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March 14, 2018

The Kenworth T680 on-highway flagship is now available for order for the first time with the combination of the Paccar MX-11 engine and the Paccar Automated Transmission.  Photo: Kenworth

Kenworth has made the T680 available for order with a combination of the Paccar MX-11 engine and the new Paccar Automated Transmission, designed for linehaul and regional haul applications up to 110,000 pounds GVWR.

The MX-11 engine offers up to 430 horsepower and 1,650 lbs.-ft. of torque and is lighter that a comparable 13 liter engine, according to Paccar. The Paccar Automated Transmission is also lighter than comparable transmissions by as much as 105 pounds, to allow for greater payloads and has good low-speed maneuverability.

“The proprietary Paccar Powertrain, which includes Paccar’s 10.8-liter MX-11 engine, 12-speed transmission and 40,000-pound tandem rear axle, provides outstanding performance through weight savings, increased fuel efficiency and enhanced driveability for Kenworth T680s operating in linehaul and regional haul applications,” said Kurt Swihart, Kenworth marketing director.

The Paccar transmission features extended maintenance with a 750,000-mile oil change interval. The clutch is designed to be maintenance free and features an internally routed electrical system that minimizes exposure to the elements. It also features a fluid pressure detection system that protects the gears from low fluid conditions.

The Paccar transmission is paired with Kenworth’s new column-mounted shifter that places gear selection and engine brake controls at the driver’s fingertips for better ergonomics and improved performance. The shifter position on the steering wheel column also frees up dash space by eliminating engine brake control switches.

The 12-speed Paccar Automated Transmission is also available with the Paccar MX-13 engine rated up to 510 horsepower and 1,850 lbs.-ft. of torque and Paccar tandem rear axles to maximize Paccar powertrain efficiency and driveability.

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