MAHLE Engine Components Japan Corporation is a leading manufacturer of diesel pistons for commercial vehicles in the Asian market. Aside from the development and production of diesel pistons, engineers at the Technical Center in Okegawa provide engineering solutions for Japanese passenger car, commercial vehicle application, stationary engines in the areas of pistons, bearings, camshafts and other products under the Group’s business unit “Engine Systems and Components”.

Company Profile

Founded: December 1923

Reorganized: February 1938

Subscribed Capital: JPY1.25 billion

Representative Director: Ivan A. Lenehan

No. of Employees: 844 (FY2021)

Sales: JPY19.4 billion (FY2021)

Business Sector: Systems supplier to the automotive industry (Mainly: Pistons and cylinder liners)

Locations in Japan

  • Head Office & Technical Center: 2-17 Akabori, Okegawa, Saitama 363-0002
    • Tel: +81 50-3363-3888
  • Tsuruoka Plant: 1-12-10 Takarada, Tsururoka, Yamagata 997-0011
    • Tel: +81 50-3363-3886
  • Yamagata Plant: 443 Omi-shita, Oe-machi, Nishimurayama-gun, Yamagata 990-1122
    • Tel: +81 50-3363-4957
  • Hirata Plant: 104 Aza-kiriyama, Nagata, Hirata-mura, Ishikawa-gun, Fukushima 963-8205
    • Tel: +81 50-3363-4738


(In alphabetical order)

  • Global Component Technologies Corp.
  • Hino Motors, Ltd.
  • Honda Motor Co., Ltd.
  • Honda R&D Co., Ltd.
  • Iseki & Co., Ltd.
  • Isuzu Motors Ltd.
  • Komatsu Cummins Engine Co., Ltd.
  • Komatsu Ltd.
  • Kubota Corp.
  • Mazda Motor Corp.
  • Mitsubishi Fuso Truck and Bus Corp.
  • Mitsubishi Heavy Industries Ltd.
  • Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
  • Mitsubishi Motors Corp.
  • Niigata Power Systems Co., Ltd.
  • Nissan Motor Co., Ltd.
  • Subaru Corp.
  • Suzuki Motor Corp.
  • Tokiwa Machinery Works Co., Ltd.
  • Toyota Motor Corporation
  • UD Trucks Corp.
  • Yamaha Motor Co., Ltd.
  • Yanmar Holdings Co., Ltd.


  • 1923 Izumi Motor Company established.
  • 1938 Izumi Automotive Industries Co., Ltd., established in Omiya City, Saitama Prefecture (Capital: JPY450 thousand).
  • 1965 Kawagoe Plant established in Kawagoe City, Saitama Prefecture.
  • 1968 Technical tie-up with MAHLE (Stuttgart, Germany).
  • 1970 Izumi Hirata Seiki Co., Ltd. established in Ishikawaga-gun, Fukushima Prefecture for production of cylinder liners.
  • 1972 MAHLE Engine Components (Thailand) Co., Ltd. (former Izumi Piston Mfg. Co. (Thailand) Ltd.) established in Bangkok, Thailand.
  • 1974 Tsuruoka Plant established in Tsuruoka City, Yamagata Prefecture.
  • 1976 Yamagata Izumi established in Nishimurayama-gun, Yamagata Prefecture.
  • 1988 Company name changed to Izumi Industries, Ltd.
  • 1990 Joint venture PT. Federal Izumi Manufacturing established in Cileungsi-Bogor (Jakarta), Indonesia.
  • 1992 Technical Center established in Okegawa City, Saitama Prefecture.
  • 1993 Okegawa Plant established in Okegawa City, Saitama Prefecture.
  • 1994 Joint venture, MAHLE Engine Components (Chongqing) Co., Ltd. (former Chongqing Changjiang Izumi Piston Industries Co., Ltd.) established in Chongqing, China with Chongqing Changjiang Piston Industries Co., Ltd.
  • 1995 Received TPM Excellence Prize Award.
  • 1997 Received Excellence in Consistent TPM Commitment Award.
  • 1998 Capital increase by MAHLE.
  • 1999 Received QS-9000 certification. Capital increase by MAHLE. Joint venture, MAHLE Engine Components (Yingkou) Co., Ltd., (former MAHLE-Izumi (Liaoning) Piston Co., Ltd.) established in Liaoning, China.
  • 2001 Shutdown of Okegawa Plant (Okegawa City, Saitama Prefecture) and manufacturing base integrated into Tsuruoka Plant (Tsuruoka City, Yamagata Prefecture).
  • 2003 Capital increase by MAHLE (Capital: JPY1.25 billion). Company changed to MAHLE Izumi Corporation.
  • 2005 Received ISO/TS16949 certification. Company name changed to MAHLE Engine Components Japan Corporation.
  • 2006 Received ISO14001 certification. Yamagata Izumi and Hirata Izumi merged as Yamagata Plant and Hirata Plant of MAHLE Engine Components Japan Corporation. Shutdown of Nishikawa Plant (Nishimurayama-gun, Yamagata prefecture)
  • 2008 Mass production of diesel pistons for passenger car applications.
  • 2011 Expansion of Tsuruoka Plant, including NCI production increase and strengthening of automatic production.
  • 2012 MAHLE Japan Ltd. becomes shareholder.
  • 2021 Start of mass production and supply of steel pistons for passenger car.

As at April 1, 2022