spark-plug
21spark plug body — See spark plug shell …
22spark plug boot — A molded rubber or plastic insulator which fits over a spark plug terminal …
23spark plug boot puller — A special automotive tool for the safe removal and installation of spark plug boots …
24spark plug brush — A hard, compact brush for removing carbon from spark plug electrodes …
25spark plug cable — British term for spark plug wire …
26spark plug condition — A visual appearance of the spark plug electrodes and insulator …
27spark plug electrode — The two electrodes in a spark plug are the center electrode and the side (or ground) electrode …
28spark plug gauge — A tool used for checking spark plug gaps; usually with metal feeler blades or calibrated wire feelers (the wire type is preferred over the blade type). It often includes an electrode adjusting tool for altering the gap between the electrodes …
29spark plug insulator — A highly stressed part of the spark plug, usually made of alumina ceramic, which serves to insulate the center electrode and the terminal stud from the shell; its material must have high dielectric, mechanical and thermal strength as well as good …
30spark plug lead — See spark plug wire …