Description

GReddy Spark Plugs are designed in cooler heat ranges to reduce heat and chances of pre-ignition. The reason it is so durable is the very fine; 0.6mm dia. Iridium electrode. Iridium Tune Spark Plugs are ideal for low to medium tuned engines; factory turbocharged engines or bolt on turbo kit equipped vehicles. PRO Iridium Plugs add a Platinum ground electrode ensure even longer life in even the most extreme driving condits. The Pro Plugs are geared toward high horsepower; higher boost applications and extra long life. GReddy Spark Plugs use NGK heat range codes; so the larger the number the colder the heat range.