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SEMT Pielstick[1] is a French diesel engine manufacturer based in Villepinte, France and owned by MAN Diesel, a subsidiary of MAN AG SEMT Pielstick was formed in 1988 when the business was acquired from GEC Alsthom by MAN and MTU, originally as a 50/50 partnership. MAN increased its shareholding in February 1998 and in December 2006 bought the remaining 33% of the shares held by MTU, thus making MAN the sole shareholder of SEMT Pielstick. The company has been renamed MAN DIESEL SA and trades under this name.

Since 2010, the company has been renamed MAN DIESEL & TURBO, following the Group's new name. PIELSTICK parts & services are no longer traded by this company, as it is now an inactive company of the MAN group.


Pielstick engines have been/are produced by many licensees and hence are known by many different names:

  • Colt-Pielstick — Fairbanks Morse — United States
  • Crossley-Pielstick — Rolls-Royce — United Kingdom (sold under the Crossley name)
  • Doosan-PielstickDoosan Heavy Industries Construction Co (DHICO) — Republic of Korea
  • Hyundai-Pielstick — Hyundai Heavy Industries — Republic of Korea
  • Kirloskar-PielstickKirloskar Oil Engines Ltd. — India
  • Lindholmen-PielstickLindholmen Motor AB — Sweden
  • PielstickShaanxi Diesel Engine WorksChina
  • Wärtsilä-Pielstick — Wärtsilä Turku Factory — Finland


  1. ^ SEMT: Societe d’Etudes de Machines Thermiques; roughly translated company for the study of thermal engines.

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