NGK Laser Iridium Spark Plugs (#6481/ILFR6B, Stock Heat Range, Box/4), 2004-2007 STi & 2006-2007 WRX

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 (#6481/ILFR6B, Stock Heat Range, Box/4), '04-'07 STi & '06-'07 WRX

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