NGK Iridium Spark Plug Box of 4 (LTR7IX-11)

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.This Part Fits: Year Make Model Submodel 2014 Cadillac CTS Vsport 2014 Cadillac CTS Vsport Premium 2014-2015 Cadillac XTS Vsport Platinum 2014-2015 Cadillac XTS Vsport Premium