This spark plug is supplied directly from the original equipment manufacturer. Composed of high-quality porcelain and metal, this item is compatible with many lawn tractor machines. The spark plug is fitted into the engine's spark plug cable, providing an electric current from an ignition system to the combustion chamber of a gas fueled e...Read morengine, igniting the air fuel mixture. This component is sold individually. A wrench and a screwdriver are helpful in the removal and replacement.