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.

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.

NGK’s Iridium IX is the personification of these qualities and takes premium performance spark plugs to a new level. A level that is expected from the world leader in spark plugs.

• Fine Iridium tip ensures high durability and a consistently stable spark
• Iridium alloy has extremely high melting point, perfect for today’s high-tech,high-performance ngines
• Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
• Outstanding acceleration, high fuel efficiency and durability
• Ultimate design, technology and performance.

Some spark plugs have the word SOLID in their name which means the terminal type is solid as opposed to removable nut.

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