NGK Spark Plugs NGK Spark Plugs Click here to see this product in our catalog and check out the most current pricing. The Spark Plug Serious Enthusiasts Rely On Designed specifically for the performance enthusiast. Iridium IXÂ® 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 todayâ€™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. If you have any questions you can reply to this thread, send us a pm or use the contact us page on our website. Thanks for the continued support, CorSport USA.