NGK Iridium IX+ Spark Plugs One Step Colder

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.*One Step Colder Heat Range for Performance Applications