NGK single iridium plugs were designed specifically for the performance enthusiast. Fine wire centre 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.