# NGK Iridium IX Spark Plug Box of 4 (LFR6AIX) 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. - RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs - Trivalent metal plating for superior anti-corrosion and anti-seizing properties - Outstanding acceleration, high fuel efficiency and durability - Fine iridium tip ensures durable and consistent spark This Part Fits: Year Make Model Submodel 2015-2020 Dodge Challenger SRT Hellcat 2015-2020 Dodge Charger SRT Hellcat 2013-2014 Hyundai Genesis Coupe 2.0T 2013-2014 Hyundai Genesis Coupe 2.0T Premium 2013-2014 Hyundai Genesis Coupe 2.0T R-Spec 2011-2012 Land Rover LR2 Base 2008-2012 Land Rover LR2 HSE 2011-2012 Land Rover LR2 HSE Lux 2008 Land Rover LR2 SE 2003-2005 Mercedes-Benz C230 Kompressor 2003-2006 Mercedes-Benz CL55 AMG Base 2006 Mercedes-Benz CLS55 AMG Base 2003-2006 Mercedes-Benz E55 AMG Base 2005-2011 Mercedes-Benz G55 AMG Base 2004-2006 Mercedes-Benz S55 AMG Base 2003 Mercedes-Benz S55 AMG Kompressor 2004-2008 Mercedes-Benz SL55 AMG Base 2003 Mercedes-Benz SL55 AMG Kompressor 2005-2009 Mercedes-Benz SLR McLaren Base 2006-2012 Mitsubishi Eclipse GS 2010-2012 Mitsubishi Eclipse GS Sport 2008,2012 Mitsubishi Eclipse SE 2007-2011 Mitsubishi Eclipse Spyder GS 2012 Mitsubishi Eclipse Spyder GS Sport 2012 Mitsubishi Eclipse Spyder SE 2004-2008 Mitsubishi Galant DE 2004-2012 Mitsubishi Galant ES 2011-2012 Mitsubishi Galant FE 2005-2007,2010-2012 Mitsubishi Galant SE 2009 Mitsubishi Galant Sport Edition 2004-2006 Mitsubishi Lancer Ralliart 2004 Mitsubishi Lancer Sportback 2004 Mitsubishi Lancer Sportback Ralliart 2005-2006 Mitsubishi Outlander Limited 2004-2006 Mitsubishi Outlander LS 2006 Mitsubishi Outlander SE 2004-2005 Mitsubishi Outlander XLS 2006 Saab 9-2X Aero 2006-2007 Subaru B9 Tribeca Base 2006-2007 Subaru B9 Tribeca Limited 2004-2006 Subaru Baja Turbo 2008 Subaru Forester Sports 2.5 XT 2004-2005,2009 Subaru Forester XT 2006-2010 Subaru Forester XT Limited 2005,2010-2013 Subaru Forester XT Premium 2011-2013 Subaru Forester XT Touring 2009-2010 Subaru Impreza 2.5 GT 2006-2014 Subaru Impreza WRX 2006-2007,2010-2014 Subaru Impreza WRX Limited 2009-2014 Subaru Impreza WRX Premium 2004-2014 Subaru Impreza WRX STI 2007,2011-2014 Subaru Impreza WRX STI Limited 2010 Subaru Impreza WRX STI Special Edition 2006-2007 Subaru Impreza WRX TR 2010-2012 Subaru Legacy 2.5GT 2009 Subaru Legacy 3.0 R 2008-2009 Subaru Legacy 3.0 R Limited 2005-2006 Subaru Legacy GT 2005,2007-2009 Subaru Legacy GT Limited 2006-2009 Subaru Legacy GT spec.B 2009 Subaru Outback 3.0 R Limited 2005-2006 Subaru Outback R 2005-2008 Subaru Outback R L.L. Bean Edition 2006 Subaru Outback R VDC Limited 2005 Subaru Outback VDC Limited 2005-2006 Subaru Outback XT 2005-2009 Subaru Outback XT Limited 2008-2009 Subaru Tribeca Base 2008-2009 Subaru Tribeca Limited 2015-2018 Subaru WRX STI Base 2015 Subaru WRX STI Launch Edition 2015-2018 Subaru WRX STI Limited 2016 Subaru WRX STI Series.HyperBlue 2008-2013 Volvo C30 T5 2008-2013 Volvo C30 T5 R-Design 2006-2013 Volvo C70 T5 2006-2009,2011 Volvo S40 T5 2010-2011 Volvo S40 T5 R-Design 2004-2007 Volvo S60 R 2005-2009 Volvo S60 T5 2011-2012 Volvo S60 T6 2007-2011 Volvo S80 3.2 2008-2011 Volvo S80 T6 2005-2009,2011 Volvo V50 T5 2010-2011 Volvo V50 T5 R-Design 2008-2010 Volvo V70 3.2 2004-2007 Volvo V70 R 2005 Volvo V70 T5 2010-2011 Volvo XC60 3.2 2011 Volvo XC60 3.2 R-Design 2010-2011 Volvo XC60 T6 2010-2011 Volvo XC60 T6 R-Design 2008-2011 Volvo XC70 3.2 2009-2011 Volvo XC70 T6 2007-2011 Volvo XC90 3.2 ## Details - **Price:** 74.61 CAD - **Vendor:** NGK - **Type:** Spark Plugs ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 74.61 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - out of package - Photo - out of package --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/ngk-iridium-ix-spark-plug-box-of-4-lfr6aix) > Updated: 2026-06-27