Iridium-plated electrodes gives these plugs superior performance
Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life.