NGK Iridium IX Spark Plug Box of 4 (LTR6IX)

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 2016-2020 Buick Envision Premium 2015-2017 Buick Regal Base 2014-2017 Buick Regal GS 2014-2017 Buick Regal Premium 2016-2017 Buick Regal Sport Touring 2018-2020 Buick Regal Sportback Base 2018-2020 Buick Regal Sportback Essence 2018-2020 Buick Regal Sportback Preferred 2018-2019 Buick Regal Sportback Preferred II 2018-2020 Buick Regal TourX Base 2018-2020 Buick