DENTON, Texas — Peterbilt has expanded its natural gas vehicle line, by offering the Cummins ISX12 G engine with the Eaton UltraShift Plus transmission.

The new powertrain is available on the Models 579, 384, 365 and 567, allowing customers to choose an automated transmission mated to a CNG- or LNG-powered engine.

“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 UltraShift Plus is available in the 13-speed MHP and 10-speed LAS configuration. The ISX12 G can be had with up to 400 hp and 1,450 lb.-ft. of torque.

“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.”