The next generation of spark plugs. NGK is a pioneer in Iridium Spark Plug design and manufacturing, and has been supplying Iridium Spark Plugs for Automotive OE since 1994.Iridium IX® -The Spark Plug Serious Enthusiasts Rely On.
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.

The next generation of spark plugs. NGK is a pioneer in Iridium Spark Plug design and manufacturing, and has been supplying Iridium Spark Plugs for Automotive OE since 1994.Iridium IX® -The Spark Plug Serious Enthusiasts Rely On.
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.