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. Specially designed to meet the needs of serious
enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high
fuel efficiency and long life. When you demand the most from your
engine, rely on the proven performance of NGK Iridium IX Spark Plugs.
Iridium IX Spark Plugs are the most technologically advanced high
performance plugs available.