Transmission housings, also known as transmission cases or gearbox casings, are integral components in automotive transmissions. They serve as protective enclosures for the various gears, shafts, and other internal components that make up the transmission system.

Transmission housings encase and protect the internal components of the transmission, including gears, shafts, bearings, and synchronizers. This protective enclosure is crucial for maintaining proper alignment and preventing contamination.