Car Parts Encyclopedia

Get expert knowledge about your vehicle's components, including symptoms of failing parts and repair advice


Your car has hundreds of components, from the headlights to the tailpipe. Click on a system to learn more about its functions and parts, and what to do if they start to go bad.


By converting fuel into motion, the engine powers your vehicle. The key parts in an engine are spark plugs, valves, pistons, connecting rods, and the crankshaft.

Electrical and Lights

When you switch on the ignition, turn on the radio, or operate the wipers, your vehicle's electrical system provides the power. It is composed of the charging, starting, computer, ignition, and lighting systems.