Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.


Combustion Chamber

This is where the magic happens. The combustion chamber is the top of the cylinder where the air/fuel mixture is compressed by the piston and ignited by the spark plug.

See Also:
Throw-out Bearing
Passing Gear
Tie Rod
Timing Belt

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