NGK R5724-9 Racing Spark Plugs

NGK R5724-9 Racing Spark PlugsFour heat ranges colder than stock, gapped at .036Ignitability of V-Power Spark Plugs "NGK's unique V-Power design directs the spark to the edge of the electrode where it can develop more rapidly. This allows easier and more complete combustion of the air/fuel mixture. The increased ignitability allows the engine to burn air/fuel ratios that would otherwise be too lean." V-Groove Explanation Quenching Effect"The amount of spark which is absorbed by the center and ground electrode is referred to as the quenching effect. The V-Power plug is designed to draw spark to the edge of the electrode. Thus, the quenching effect is minimized, resulting in more effective, complete combustion." NGK Racing R5724-9 Spark Plugs fits the following vehicle(s):2009 Cadillac CTS-V 2010 Cadillac CTS-V 2011 Cadillac CTS-V 2012 Cadillac CTS-V 2013 Cadillac CTS-V 2014 Cadillac CTS-V 1999 Cadillac Escalade 2000 Cadillac Escalade 2005 Cadillac Escalade 2008 Cadillac Escalade 2009 Ca