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Mitsubishi Heavy Industries Machine Tool to Integrate Engine Valve Business into Fuji Oozx


Tokyo, January 28, 2016 - On January 28, Mitsubishi Heavy Industries Machine Tool Co., Ltd. (hereinafter referred to as "MAT"), a Group company of Mitsubishi Heavy Industries, Ltd. (MHI), and Fuji Oozx Inc. agreed to integrate their automobile engine valve businesses. In addition to integrating its hollow-head valve production facilities into the joint venture company, MAT will also transfer its solid valve business to Fuji Oozx. Through the integration of their businesses, the two companies aim to strengthen product diversification and expand business scale.

The new company, tentatively named "Fuji Hollow Valves, Inc.", will be established in February as a wholly-owned subsidiary of Fuji Oozx, and later succeed both MAT's hollow-head valve business and Fuji Oozx's hollow-stem valve business. After the business transfer, MAT and Fuji Oozx will own 31.9% and 68.1% of the new company's shares, respectively. Toru Suzuki, Director of Fuji Oozx, will serve as president of the new company.

The joint venture will further develop hollow engine valve technologies and knowhow accumulated by the two parent companies, and will manufacture both hollow-head and hollow-stem valves. Marketing activities, including order-taking and sales, will be handled by Fuji Oozx.

Hollow-head engine valves are derived from valves developed by MHI prior to WWII for use in aircraft engines. Based on its original production technology, MHI has since developed lightweight, high value-added hollow-head automotive valves that enhance engine response and boost fuel economy. MHI has also been establishing mass production structures and expanding sales for these types of valves.

The environmental and economic benefits of "eco-cars" have made such cars increasingly popular in recent years, particularly in Japan, the U.S. and Europe. As a result, automakers have increasingly focused on the development of highly efficient new engines, creating increased demand for hollow engine valves that enhance both fuel efficiency and engine performance. This in turn has required valve manufacturers to acquire mass-production capabilities for a wide range of different types of hollow engine valves. MAT's solid engine valve business has also faced challenges in materials procurement and mass-production efficiency, both of which can be more effectively addressed through integration with Oozx and the establishment of a joint venture dedicated to hollow valve production.

Through the integration of the valve businesses of the two companies, existing customers of MAT will benefit from a stable supply of high quality engine valves in the long term, and Oozx will be able to expand its customer base together with product portfolio and enhance its presence in the market.

Going forward, this integration will enable MAT to share automotive engine valve knowhow and technical expertise with Fuji Oozx, and allow it to strengthen its presence in the market while synergistically developing new business opportunities.

About MHI Group

Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, smart infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit or follow our insights and stories on