NGK Iridium IX Spark Plug, BKR8EIX

Recommended for use with forced induction race only engines. *This plug is 1 step colder than BKR7EIX Designed specifically for the performance enthusiast.  Iridium IX® offers extreme ignitability, improved throttle response and superior anti-fouling Fine Iridium tip ensures high durability and a consistently stable spark Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties Outstanding acceleration, high fuel efficiency and durability Ultimate design, technology and performance.