NGK Laser Iridium Spark Plugs (#5245/ILFR7H, Stock Heat Range, Box/4), 2018 STi Type RA & 2019-2021 STi

NGK single iridium 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 Laser Iridium Spark Plugs (Stock Heat Range, Set/4), '06 EVO 9 & '18 STi Type RA & '19-'21 STi

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