DaimlerChrysler: Dodge uses a Cummins inline six-cylinder diesel engine that is optional in the Ram truck.
Delphi Automotive Systems: Makes diesel parts for Renault, Peugeot, Citroen, Kia, Isuzu and Fiat. At the Geneva auto show last week, Delphi announced it will supply common-rail systems to Ford.
Ford-Navistar: Navistar's International unit builds the Powerstroke V-8 diesel that is optional in the Ford F-series and Excursion.
General Motors: GM tapped the diesel expertise of partner Isuzu for the new 6.6-liter Duramax V-8 turbodiesel used in the Chevrolet Silverado and GMC Sierra HD trucks.
International Truck and Engine Corp. (Navistar): Operates a joint venture with Sturman Engine Systems and is developing camless diesel engines.