Spark plugs in

The device of almost all the spark plugs in general is the same. The candle usually consists of an electrode, an insulator (made of high -strength ceramic material), a case and a contact pin, which is often covered with an attack. The candle housing is also equipped with a thread for screwing into the candle well on the cylinder head, and a hexagon, which simplifies its installation and tightening with a hexagonal key.