| Exhaust gas recirculation valve | |
| A material that provides a path for the flow of electrical current or heat. | |
| Enclosure formed by a pocket in the cylinder head at the top of the piston, where the spark plug ignites the compressed air/fuel mixture. The volume of the cylinder above the piston when the piston is at TDC top dead center. | |
| The process through which a liquid is turned into vapor. |