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Peterbilt adds Ultrashift Plus, ISX12 G to Natural Gas Lineup

June 3, 2014

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Several trucks in Peterbilt's stable of natural gas powered vehicles can now be ordered with the Eaton UltraShift Plus automated manual transmission and a Cummins Westport ISX12 G engine. These include the Models 579, 567, 384 and 365.

CNG-powered Peterbilt Model 579.
CNG-powered Peterbilt Model 579.

“This new powertrain is an ideal option for our customers in vocational, regional and line haul applications, providing precise shifting for more efficient operation with a versatile, fuel efficient natural gas engine,” said Robert Woodall, Peterbilt’s Director of Sales and Marketing. “It’s a great way to maximize the fuel economy benefits of our aerodynamic, lightweight vehicles.”

The Eaton UltraShift Plus is available in the 13-speed MHP and 10-speed LAS series and the 11.9-liter Cummins Westport ISX12 G is available up to 400 horsepower and 1,450 lb.-ft. of torque.

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The automated transmission features intelligent shift selection software that optimizes performance and efficiency, as well as tailored shift logic that enhances braking performance. It can benefit both new and veteran operators through precision shifting that senses and adjusts to grades, weight and driver throttle commands.

“The addition of this powertrain option to our natural gas vehicle lineup expands the versatility and range of our already industry-leading breadth of natural gas vehicles,” Woodall said. “Customers can choose from a wide range of vehicles, engines and spec options to meet their full range of needs.”

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