NGK Iridium IX Spark Plugs (#6510/LTR7IX-11, 1 Range Colder, Box/4), 2013-2014 Focus ST

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.

Included:
• NGK Iridium IX Spark Plugs (#6510/LTR7IX-11, 1 Range Colder, Box/4), '13-'14 Focus ST

Features:
• 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