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.

Back

Overhead Cam

A camshaft "over the head" rather than below the cylinders in the engine block, and generally considered a more modern engine design. Overhead cams eliminate the need for pushrods to open and close the valves. If you ever see letters such a "DOHC" on an engine, this means Dual Over Head Cam," as in two cams in the cylinder head.



See Also:
Schrader valve
Crankshaft
Stator
Boots
Tie Rod
Piston Slap
Firing Order
Thrust Angle

Diagnose Your Car's Problem

Engine won't start? Weird sound? Strange smoke? Got something going on with your car but not sure what it is? The easy to use DriverSide Diagnostic Tool is here to help you figure it out.



Enter Zip: