GReddy Spark Plugs are designed in cooler heat ranges to reduce heat and chances of pre-ignition. The reason they are so durable is the very fine, 0.6mm diameter iridium electrode. Iridium Tune spark plugs are ideal for low to medium tuned engines, factory turbocharged engines, or bolt on turbo kit equipped vehicles.
* GReddy Spark Plugs use NGK heat range codes, so the larger the number the colder the heat range.
[color=#ff6600][b]Price quoted is for a set of 4 spark plugs.[/b][/color]
All fitment information is only a guide, exact fitment may differ. If in doubt please email us.