Spark Plugs

Spark plugs deliver the high-voltage spark needed to ignite the air/fuel mixture within an internal combustion engine’s cylinders. These components thread into the cylinder head, extending into the combustion chamber. Technical variations include electrode material (copper, platinum, iridium) influencing service life and performance, as well as heat range to manage combustion temperature. Plug geometry—specifically electrode shape and gap—is critical for efficient and complete combustion. Modern spark plugs may also incorporate features like ribbed insulators for improved dielectric strength and anti-foul designs.