The NGK Iridium IX spark plug delivers extreme ignitability, improved throttle response and superior anti-fouling through a fine iridium tip and tapered ground electrode. Built with a high-melting-point iridium alloy, the center electrode offers exceptional durability compared with platinum while trivalent plating resists corrosion and seizing. These plugs are recommended for modified or higher-output applications or as an upgrade from OE nickel alloy plugs for better acceleration and efficiency.
NGK Iridium Spark Plug Box of 4 (BKR8EIX)