News Releases

Published: March 24, 2010

Kenworth Expands Natural Gas Truck Line with T440 Powered by ISL G
New Model Targets Local and Regional Haul plus Vocational Applications

VANCOUVER,BC– Cummins Westport Inc. (“CWI”), a leading provider of high-performance, alternative fuel engines for the global market, announced today that Kenworth Truck Company has added the T440 Natural Gas Truck to its line of industry-leading green products. The Kenworth T440 natural gas model is powered by the Cummins Westport ISL G engine.

“There is growing demand in CNG and LNG vehicles across the United States and Canada. The natural gas powered Kenworth T440 offers outstanding horsepower, torque and performance and provides an excellent, low-emission and cost-effective transportation solution for local and regional haul fleets. The tight turning radius and lightweight chassis also make the T440 natural gas vehicle an excellent choice in a mixer or dump application,” said Gary Moore, Kenworth assistant general manager for marketing and sales.

The Kenworth T440 natural gas model is available now for order and is focused on local and regional haul and vocational. The Kenworth Extended Day Cab and Kenworth 38-inch AeroCab® FlatTop sleeper are available as options. The Kenworth T440 offers excellent value, productivity and aerodynamics to fleet and truck operators. The T440 has a gross vehicle weight (GVW) ranging from a heavy Class 7 vehicle at 33,000 lbs. up to a light Class 8 truck at 68,000 lbs. and is available with 12,000 to 22,000 lb. rated front axles, 21,000 to 26,000 lb. rated single rear axles, and 40,000 to 46,000 lb. rated tandem rear axles. Other key features include an aerodynamic sloped hood and 3-piece bumper; best-in-class forward lighting with Halogen projector headlamps; high-quality multiplexed dash, and Kenworth Driver Information Center.

The ISL G engine operates on either CNG or LNG, both of which are cost effective, low carbon, and low emissions fuels. Rated at 320 hp and 1,000 lb-ft of torque, the ISL G is 2010 compliant without the use of selective catalytic reduction (SCR) or a diesel particulate filter (DPF). CNG and LNG fuel tanks can be configured to suit customer applications and range requirements.

About Cummins Westport Inc.

Cummins Westport Inc. designs, engineers and markets 6–12 liter spark-ignited natural gas engines for North American commercial transportation applications such as trucks and buses. Cummins Westport is a joint venture of Cummins Inc. (NYSE:CMI), a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems, controls, air handling, filtration, emission solutions and electrical power generation systems, and Westport Fuel Systems Inc. (NASDAQ/TSX: WPRT), a global leader in alternative fuel, low-emissions technologies that allow engines to operate on clean-burning fuels such as compressed natural gas (CNG), liquefied natural gas (LNG), hydrogen, and biofuels such as landfill gas. For more information, visit www.cumminswestport.com.

About Kenworth Truck Company

Kenworth Truck Company is the manufacturer of The World’s Best® heavy and medium duty trucks. Kenworth is an industry leader in providing fuel-saving technology solutions that help increase fuel efficiency and reduce emissions. The company’s dedication to the green fleet includes aerodynamic trucks, liquefied and compressed natural gas trucks, and medium duty diesel-electric hybrids. Kenworth is the recipient of the 2009 J.D. Power and Associates awards for Highest in Customer Satisfaction for both Over the Road Segment and Pickup and Delivery Segment Class 8 Trucks, and for Heavy Duty Dealer Service. Kenworth’s Internet home page is at www.kenworth.com. Kenworth. A PACCAR Company.

Cautionary Note Regarding Forward Looking Statements

This document contains forward-looking statements, including statements regarding the demand for our products, the future success of our business and technology strategies, investment, cash and capital requirements, intentions of partners and potential customers, the performance and competitiveness of our products and expansion of product coverage, future market opportunities, speed of adoption of natural gas for transportation, growth in demand as a result of new emission standards and terms of future agreements. These statements are neither promises nor guarantees, but involve known and unknown risks and uncertainties and are based on assumptions that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activities, performance or achievements expressed in or implied by these forward looking statements. These risks and assumptions include risks and assumptions related to our revenue growth, operating results, industry and products, the general economy, conditions of and access to the capital and debt markets, governmental policies and regulation, technology innovations, fluctuations in foreign exchange rates, global government stimulus packages, the acceptance of natural gas vehicles in fleet markets, the relaxation or waiver of fuel emission standards, the inability of fleets to access capital or government funding to purchase natural gas vehicles, the sufficiency of bio methane for use in our vehicles, the development of competing technologies as well as other risk factors and assumptions that may affect our actual results, performance or achievements or financial position discussed in our most recent Annual Information Form and other filings with securities regulators. Readers should not place undue reliance on any such forward-looking statements, which speak only as of the date they were made. We disclaim any obligation to publicly update or revise such statements to reflect any change in our expectations or in events, conditions or circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ from those set forth in the forward looking statements except as required by National Instrument 51-102.

More Information

Cummins Inc.

Jon Mills
Director, External Communications
T 317-610-4244
jon.mills@cummins.com
www.cummins.com

Cummins Westport Inc.

Darren Seed
Vice President, Investor Relations and Communications
T 604-718-2046
invest@westport.com
www.cumminswestport.com

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