Kenworth Truck Co. will begin production of T800 liquefied natural gas (LNG) trucks at its Renton, WA facility in 2009. The trucks will use Westport Innovations Inc.’s LNG fuel system technology adapted for the Cummins ISX 15-liter engine.

“The Kenworth T800, equipped with a Cummins ISX and Westport’s HPDI fuel system, offers an industry-leading solution with world-class low emissions and greenhouse gases, while delivering outstanding horsepower, torque, and efficiency comparable to a diesel engine,” said Bob Christensen, Kenworth gm & Paccar vp.

Kenworth and Westport Innovations previously worked together on an aftermarket basis, equipping T800s with LNG fuel systems for the Ports of Los Angeles and Long Beach, as well as Pacific Gas & Electric Co. in San Francisco.