NGK Iridium Spark Plugs at 100,000 Miles
NGK Iridium Spark Plugs 6994 (IZFR6K11) - http://amzn.to/2fCEsp3 NGK (6994) Laser Iridium Spark Plug Designed to operate over a much wider heat range than ordinary plugs Resists carbon buildup and pre-ignition High alumina ceramics for better heat