Spark Plug – ignites the air/fuel mixture in the combustion chamber of the petrol engine. It threads into the cylinder head with its electrode gap exposed in the chamber, where the high-tension spark across the gap initiates each power stroke.

Specified for low-compression (7:1) petrol applications, with a heat range matched to the operating temperature of the combustion chamber. Correct gap setting on installation supports reliable starting, a smooth idle and efficient combustion.