List of companies whose principal business is the manufacturing of automotive drive train components. This includes makers of transmission, axles, transfer cases, drive shafts, and other drive train components for the automotive industry.
| Dynojet Research Inc. Manufacturer of the Dynojet auto dynamometer. | |
| Eaton Corporation Eaton is a global provider of automotive products, including drivetrain & engine components, for a variety of applications. | |
| Dana Corporation Dana Holding Corporation is a world leader in automotive drivetrain components. | |
| Tremec Tremec specializes in the design & manufacture of automotive transmissions for a variety of OEM & aftermarket applications. | |
| B & M Racing Products B&M produces a variety of performance drivetrain components including transmissions, torque converters, shifters, & shift kits. | |
| Hurst Shifters Hurst Shifters manufactures high performance manual & automatic transmission shifters & shifter accessories. | |
| American Axle & Manufacturing Inc. Official website of American Axle & Manufacturing Inc., manufacturer of driveline & related automotive components (Official Site). | |