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 Provides superior anti-corrosion and anti-seizing properties Provides superior strength and better heat transfer Prevent flashover Applications 2004 Aston Martin DB7 1986 – 1988 Buick Century 2008 – 2009 Buick LaCrosse 1986 – 1988 Buick LeSabre 2004 – 2007 Cadillac CTS V 2007 – 2014 Cadillac Escalade 2004 – 2006 Cadillac SRX 2005 – 2006 Cadillac STS 2004 – 2006 Cadillac XLR 2002 – 2012 Chevrolet Avalanche 2010 – 2015 Chevrolet Camaro SS 1998 – 2002 Chevrolet Camaro Z28 2011 – 2017 Chevrolet Caprice 1998 – 2002 Chevrolet Cavalier 2009 – 2012 Chevrolet Colorado 2006 – 2013 Chevrolet Corvette 2001 – 2004 Chevrolet Corvette Z06 1993 – 1995 Chevrolet Corvette ZR-1 What’s In The Box? 1 – Iridium IX Spark Plug Warranty 60 Day Warranty