- ALSTOM ENGINES
- ANGLO BELGIAN CORPORATION
- AS GRENAA MOTORFABRIK
- BF GOODRICH
- BRITISH POLAR ENGINES
- CHANTIERS
- COCKERILL MECHANICAL INDUSTRIES
- COLTEC
- DALIAN LOCO
- ENGLISH ELECTRIC
- GE TRANSPORTATION SYSTEMS
- GENERAL ELECTRIC CORPORATION
- HEDEMORA DIESEL
- IHC HOLLAND
- M.0.D. (NAVY)
- MAN B & W DIESEL
- MAN B & W DIESEL, MIRRLEES BLACKSTONE
- MAN B & W DIESEL, PAXMAN
- MAN B & W DIESEL, RUSTON
- NATIONAL GAS & OIL ENGINE CO
- PAXMAN DIESELS
- PERKINS ENGINES
- ROLLS ROYCE
- ROLLS ROYCE POWER ENGINEERING
- RUSTON DIESELS
- SKODA DIESEL
- ULSTEIN BERGEN
- VARITY PERKINS
- WARTSILA
- WAUKESHA
- WERKSPOOR
- Z
