NGK 7397-4PK TR5IX Iridium IX Spark Plug, 4 Pack
- NGK Sparkplugs 7397 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.
