NGK TR6IX Iridium Spark Plugs (Set of 8) (2007- 2012 Shelby GT500/ 1996- 2004 SVT Cobra/ 1996- 2004 Ford Mustang GT/ 2003- 2004 Mach 1/ 2005- 2009 Ford Mustang V6/ 2002- 2003 Harley Davidson F150/ 1999- 2004 SVT Lightning/ 2013 SVT Shelby GT500 5.8L)

NGK TR6IX Iridium Spark Plugs (Set of 8) (2007-2012 SVT Shelby GT500/ 1996-2004 SVT Cobra/ 1996-2004 Ford Mustang GT/ 2003-2004 Mach 1/ 2005-2009 Ford Mustang V6/ 2002-2003 Harley Davidson F150/ 1999-2004 SVT Lightning/ 2013 SVT Shelby GT500 5.8L)

Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.

NGK’s new Iridium IX is the personification of these qualities and takes premium performance spark plugs to a new level. A level that is expected from the world leader in spark plugs.