News Releases

Published: May 17, 2011

Westport Announces Agreement with Caterpillar for Evaluation of Fuel System Technologies for High Horsepower Engines

VANCOUVER, BC – Westport Innovations Inc. (TSX:WPT / NASDAQ:WPRT), a global leader in alternative fuel, low-emissions transportation technologies, today announced that it has entered into an agreement with Caterpillar, Inc. (NYSE:CAT) to evaluate direct injection, natural gas fuel system technologies for possible use on Caterpillar’s large engines.  As part of the agreement, the parties will combine their respective technologies and components to develop a fuel system that will be evaluated on a multi-cylinder test engine.  Through this evaluation project, Westport and Caterpillar are seeking to demonstrate that the integration of their respective direct injection, natural gas technologies can deliver the high performance and high efficiency requirements large engine applications will demand.  Under the terms of the agreement, the evaluation is expected to be completed in 2012, with program expenses shared by both Caterpillar and Westport.

"We are excited to work with Caterpillar, the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives," said Bruce Hodgins, Vice President, Market Development of Westport Innovations. "This is a significant opportunity for both companies to demonstrate the viability of direct injection natural gas technology on large engines.”

“Caterpillar looks forward to working with Westport, a global leader in alternative fuel technologies, to evaluate how we may combine our respective technologies to enhance customer value in the markets we serve,” said M. Lou Balmer-Millar, Product Manager, Caterpillar Fuel Systems of Caterpillar Inc.

Caterpillar high horsepower engines are used in a variety of electric power, industrial, machine, marine and petroleum applications worldwide.

About Westport Fuel Systems

At Westport Fuel Systems, we are driving innovation to power a cleaner tomorrow. We are a leading supplier of advanced fuel delivery components and systems for clean, low-carbon fuels such as natural gas, renewable natural gas, propane, and hydrogen to the global automotive industry. Our technology delivers the performance and fuel efficiency required by transportation applications and the environmental benefits that address climate change and urban air quality challenges. Headquartered in Vancouver, Canada, with operations in Europe, Asia, North America and South America, we serve our customers in more than 70 countries with leading global transportation brands. At Westport Fuel Systems, we think ahead. For more information, visit www.wfsinc.com.

About Caterpillar

For more than 85 years, Caterpillar Inc. has been making sustainable progress possible and driving positive change on every continent. With 2011 sales and revenues of $60.138 billion, Caterpillar is the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives. The company also is a leading services provider through Caterpillar Financial Services, Caterpillar Remanufacturing Services, Caterpillar Logistics Services and Progress Rail Services. :: www.caterpillar.com

About Westport

Westport, a division of Westport Fuel Systems Inc., engineers the world’s most advanced natural gas engines and vehicles. We work with original equipment manufacturers worldwide from design through to production, creating products to meet the growing demand for vehicle technology that will reduce both emissions and fuel costs. To learn more about our business, visit www.westport.com, subscribe to our RSS feed, or follow us on Twitter @WestportDotCom

More Information

Westport Fuel Systems
(Investor Inquiries)

Shawn Severson
Investor Relations
T 604-718-2046
invest@wfsinc.com
www.wfsinc.com

Caterpillar Inc.

Rachel Potts
Corporate Public Affairs
T 309-675-6892
potts_rachel_a@cat.com
www.cat.com

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