Cummins Westport Appoints Guan Saw as President.

VANCOUVER, British Columbia -- Cummins Westport Inc. and Westport Innovations Inc. (TSX:WPT):

Cummins Westport Inc. (CWI), a joint venture of Cummins Inc. (NYSE:CMI) and Westport Innovations Inc., announced today that the Board of Directors has appointed Guan Saw as President, effective April 1, 2005. Mr. Saw is currently Cummins General Manager-East Asia International Distributor Business in Beijing.

Steve Chapman, CWI's Chairman, commented, "Guan has excellent skills and specific experience to lead CWI's international growth plan, particularly in Asia where the demand for alternative fueled engines continues to increase. We are very pleased to have him join the team."

Mr. Saw, 50, joined Cummins in 1989. Currently based in Beijing, he has been responsible for Cummins distributor business growth in East Asia, including Mainland China, Hong Kong, Taiwan, and Mongolia. Previously, Mr. Saw has held a number of key Cummins management roles including Manager, Marketing and Business Development-China/Hong Kong, General Manager-Cummins Hong Kong, and various management roles in the United States. He obtained a Bachelor of Mechanical Engineering from the University of Malaya in Malaysia, and a Masters of Public and Private Management degree from Yale University. Mr. Saw will relocate to Vancouver with his family.

"I am very excited to be joining CWI, the industry leader in the natural gas engine market," said Mr. Saw. "Natural gas engines are the way of the future and I look forward to leading the CWI team at this exciting time. CWI's products are well positioned to support the efforts to improve air quality in large cities, particularly in Asia."

Hugh Foden, CWI's President since mid-2002, will accept a new assignment within Cummins to lead the engine business in the United Kingdom, Europe, the Middle East, Africa, and the Commonwealth of Independent States.

Dr. Michael Gallagher, President and Chief Operating Office of Westport Innovations and CWI Director, said, "CWI will benefit tremendously from Guan's international business experience, his understanding of the Cummins worldwide organization and his current knowledge of the Chinese and Asian markets, where we expect rapid growth in demand for natural gas engines. We would also like to recognize Hugh Foden's dedication and commitment to CWI over the past few years. He has advanced CWI to a position of global leadership in clean gaseous-fueled engines and built a strong platform for future growth. On behalf of the Board of CWI, we thank him for helping us to realize our vision of creating a better world through innovative energy solutions, and we wish him success in his new responsibilities."

Cummins Westport Inc., a joint venture of Cummins Inc. (NYSE:CMI) and Westport Innovations Inc. (TSX:WPT), manufactures and sells the world's widest range of low-emissions alternative fuel engines for commercial transportation applications such as trucks and buses. Cummins is a global power leader in engines, electrical power generation systems and related technologies. Westport Innovations is the leading developer of technologies that allow engines to operate on clean-burning fuels such as natural gas, hydrogen, and hydrogen-enriched natural gas (HCNG).

Note: This document contains forward-looking statements about Cummins Westport's business, operations, technology development or to the environment in which it operates, which are based on Cummins Westport's estimates, forecasts and projections. These statements are not guarantees of future performance and involve risks and uncertainties that are difficult to predict, or are beyond Cummins Westport's control. Consequently, readers should not place any undue reliance on such forward-looking statements. In addition, these forward-looking statements relate to the date on which they are made. Cummins Westport disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Westport Innovations Inc. (TSX:WPT)