NGK Iridium IX Spark Plug Box of 4 (CR8EIX)

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 1999-2004 Aprilia Scarabeo 125 Base 1999-2004 Aprilia Scarabeo 150 Base 2011-2012 Arctic Cat 350 Base 2009 Arctic Cat 366 4x4 Auto Base 2010-2011 Arctic Cat 366 4x4 Auto SE Base 2014-2015 Arctic Cat 400 Base 1998 Arctic Cat 400 2x4 Base 1998 Arctic Cat 400 4x4 Base 2009-2010 Arctic Cat 400 4x4 Auto TRV Base 2013 Arctic Cat 400 Core Base 1998 Arctic Cat 500 4x4