Cummins Westport Receives Engine Order for Paris Refuse & Street Washer Trucks.

Business Editors

VANCOUVER, British Columbia--(BUSINESS WIRE)--June 10, 2004

Cummins Westport Inc. (CWI) (TSX:WPT) today announced it has received an order from France for an initial 78 CWI B Gas Plus and C Gas Plus engines. The engines will be installed in refuse collection trucks and pressure street washers manufactured by PVI, a subsidiary of Ponticelli, for operation within the city of Paris. Delivery of the engines will begin this quarter and is expected to be complete in early 2005.

Paris authorities have recently set a target of 300 refuse collection trucks to be operating on natural gas by 2006, three times the current number in operation. Other large European cities are considering similar targets.

"This sale in France is further evidence of our international expansion efforts for both transit and refuse applications of our engines," said Hugh Foden, President of CWI. "We are seeing strong growth indicators in a number of our refuse markets."

The 230-horsepower B Gas Plus and the 250-horsepower C Gas Plus meet existing Euro III standards for emissions while maintaining the power and torque customers expect and require for city operations such as transit and refuse collection.

Cummins Westport Inc., a joint venture of Cummins Inc. (NYSE: CMI) and Westport Innovations Inc. (TSX: WPT), develops and markets low-emissions, alternative fuel engines manufactured by Cummins. Cummins Inc. is a global power leader in engines, electrical power generation systems and related technologies. Westport Innovations Inc. is the leading developer of clean natural gas- and hydrogen-fueled engines.

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.