Iridium IX Spark Plug by NGK NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today’s high-tech, high performance engines. Features Trivalent metal plating Corrugated ribs Pure alumina silicate ceramic insulator Copper core aids in heat removal Triple seals prevent leakage Benefits Prevents flashover Provides superior anti-corrosion and anti-seizing properties Provides superior strength and better heat transfer Applications 2000 Aston Martin DB7 2009 – 2015 Cadillac CTS V 2014 – 2015 Chevrolet Camaro Z/28 2012 – 2015 Chevrolet Camaro ZL1 2006 – 2013 Chevrolet Corvette Z06 1996 – 2011 Ford Crown Victoria 1999 – 2004 Ford F-150 2005 – 2006 Ford GT 2008 – 2009, 2013 – 2014 Ford Mustang Shelby GT500 1999 – 2004 Ford Ranger 1999 – 2006 Ford Taurus 2006 – 2011 Mercury Grand Marquis 2003 – 2005 Mercury Sable 1989 Pontiac Firebird Trans Am 1989 – 1990 Pontiac Grand Prix What’s In The Box? 1 – Iridium IX Spark Plug Warranty 60 Day Warranty