Iridium Tune - ISO, Heat: 9 Greddy Spark Plugs

GReddy Iridium Tune Spark Plugs are designed for reducing heat from mildly tuned motors. For instance, they are commonly used for factory turbocharged engines which just want to boost up a little bit. The use of iridium electrodes helps to insure a long plug life. Our special ceramic insulator is used for increased heat transfer. The higher the number, the colder the heat range will become.