NGK Iridium Spark Plug Box of 4 (ZFR6FIX-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 2001-2003 Acura CL Type-S 2002-2003 Acura TL Type-S 2006-2010 BMW 550i Base 2006-2010 BMW 650i Base 2006-2008 BMW 750i Base 2006-2008 BMW 750Li Base 2007-2008 BMW X5 4.8i 2004-2006 BMW X5 4.8is 2009-2010 BMW X5 xDrive48i 2009-2011 Chevrolet Aveo LS 2009-2011 Chevrolet Aveo LT 2009-2011 Chevrolet Aveo5 LS 2009-2011 Chevrolet Aveo5 LT 2007 Chrysler Aspen Li