Peterbilt is taking immediate orders for its vocational and aerodynamic vehicles powered by compressed and liquefied natural gas. The Model 365 and Model 384 will be offered with the Cummins Westport ISL G

and built at Peterbilt's truck manufacturing facility in Denton, Texas.

"Our Models 365 and 384 are examples of Peterbilt's commitment to delivering products that will reduce harmful emissions and provide the performance and overall value our customers need," said Bill Jackson, Peterbilt general manager and Paccar Vice President. "These two NG powered platforms join Peterbilt's three medium duty hybrid electric vehicles currently in production to offer the widest range of environmental friendly options to our customers."

The Peterbilt Model 365 NG features innovative solutions to improve ride and handling, enhance weight distribution as well as maximize performance and profitability without sacrificing overall efficiency. The Model 365 NG is equipped with the ISL G providing a 320 horsepower rating and 1,000 pounds-feet of torque. The Model 365 has a 115-inch BBC, and is available in both set-forward and set-back axle configurations and sets the standard for quality, durability, productivity and environmental responsibility.

The Cummins Westport's ISL G powered Model 384 can meet the needs of a wide variety of customer applications including line, bulk and tanker hauling.

Cummins Westport's ISL G natural gas engine for heavy-duty Class 8 trucks allows trucking fleets to move to lower-cost, domestically available natural gas and/or biogas while offering industry-leading emissions, including lower greenhouse gas emissions, than comparable diesel engines. Based on the Cummins ISL diesel engine with cooled EGR, the NG version integrates robust diesel components into an engine specifically designed for alternative fuels and offers similar horsepower, torque, and efficiency as the base diesel engine it is replacing. The engine meets U.S. EPA and CARB 2010 emissions standards today.

The Cummins Westport ISL G engine can be fuelled by either a compressed natural gas (CNG) or liquefied natural gas (LNG)- both are cost effective, low carbon, and low emissions fuel-and is available with a 320 horsepower rating and a 1,000 pounds-feet torque rating for heavy-duty port, freight and vocational applications. CNG or LNG fuel tanks can be configured to suit customer applications and range requirements. NG heavy-duty trucks are eligible for federal tax credits in the United States and may be eligible for other state-specific emissions credits.

For more information about Cummins Westport and the ISL G visit www.cumminswestport.com.

For more information about Peterbilt, visit www.peterbilt.com.