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IMPCO Technologies, Inc. Joins New Russell Microcap Index

CERRITOS, Calif., June 30 -- IMPCO Technologies, Inc. joined the new Russell Microcap(TM) Index when Russell Investment Group reconstituted its family of U.S. indexes on June 24. Russell recently posted a membership list for the Russell Microcap at

"We are very pleased to have been added to the Russell Microcap Index," stated Mariano Costamagna, President and Chief Executive Officer of IMPCO Technologies, Inc.

Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for both passive and active investment strategies. More than $2.5 trillion in assets currently are benchmarked to them. Investment managers who oversee these funds purchase shares of member stocks according to that company's weighting in the particular index.

About IMPCO Technologies:

IMPCO designs, manufactures, markets and supplies advanced product and systems to enable internal combustion engines to run on clean burning gaseous fuels such as natural gas, propane and biogas. IMPCO is leader in the heavy duty, industrial, power generation and stationary engines sectors. Headquartered in Cerritos, California, IMPCO has offices throughout Asia, Europe, Australia and North America. More information can be found at IMPCO's web site,

About BRC Gas Equipment:

BRC produces a complete range of systems for converting vehicles to gaseous fuel to meet market requirements. BRC is leader in the light duty and automobile alternate fuel sectors and established alliances with several major car-makers for OEM projects. Headquartered in Cherasco, Italy, BRC has offices throughout Asia, Europe and South America. More information can be found at BRC's web site,

Russell, a global leader in multi-manager investment services, provides investment products and services in more than 39 countries. Russell manages more than $135 billion in assets and advises clients worldwide representing $2.3 trillion. Founded in 1936, Russell is a subsidiary of Northwestern Mutual and is headquartered in Tacoma, Wash., with additional offices in New York, Toronto, London, Paris, Singapore, Sydney, Auckland and Tokyo.

Except for historical information, the statements, expectations and assumptions contained in the foregoing press release are forward-looking statements. Such forward-looking statements include, but are not limited to, the company's expectations regarding revenues in future periods and trends in the global economy and environmental regulation that impact our business from time to time. Such statements are subject to a number of risks and uncertainties, and actual results could differ materially from those discussed in any forward-looking statement. Accordingly, you should not construe statements of anticipated performance or planned courses of action as assurances or promises, and note that our statements of expectations are based on information currently available to management. Factors that could cause actual results to differ materially from our forward-looking statements include, among other factors, prevailing market and global economic conditions; changes in environmental regulations that impact the demand for our products; our ability to manage our leverage and address operating covenant restrictions relating to our indebtedness; our ability to negotiate and comply with waivers pertaining to existing loan covenant defaults; the company's ability to design and market advanced fuel metering, fuel storage and electronic control products; the company's ability to meet OEM specifications; and the level and success of the company's development programs with OEMs. Readers also should consider the risk factors set forth from time to time in our SEC reports, including but not limited to those contained in the section entitled "Management's Discussion & Analysis of Financial Condition and Results of Operation - Risk Factors" in its Annual Report on Form 10-K for the fiscal year ended December 31, 2004. The company does not undertake to update or revise any of its forward-looking statements even if experience or future changes show that the indicated results or events will not be realized.

   For further information, please contact Dale Rasmussen, Vice President,
   Investor Relations.

   Phone:  +1-206-315-8242
   Fax:    +1-206-315-8301