NGK Iridium IX Spark Plug 7401 UR4IX

NGK IX Iridium Series plugs were designed specifically for the performance enthusiast.

• Fine wire center electrode ensures high durability and a consistently stable spark
• Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines
• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
• Corrugated ribs prevent flashover
• Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
• Copper core aids in heat removal
• Triple seals prevent leakage
• MPN: UR4IX

Shell

Center Electrode

Ground Electrode