Ruthenium HX Spark Plug by NGK NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions. 0.4mm Ruthenium alloy fine wire center electrode and 0.8mm platinum fine wire ground electrode. Trivalent metal platinum provides superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator provides superior strength and better heat transfer. Copper core aids in heat removal. Features DFE & PSPE tip designs Superior oxidation resistance Advanced high-ignitability technology Enhanced blistering/anti-peeling Benefits Provides more complete fuel burn than other precious metal spark plugs Quicker throttle response Smoother idle and better cold starts Applications 2011-2014 Chrysler 200 Limited 2011-2014 Chrysler 200 LX 2011-2014 Chrysler 200 Touring 2008-2010 Chrysler Sebring Limited 2008-2010 Chrysler Sebring LX 2008-2010 Chrysler Sebring Touring 2010-2011 Dodge Avenger Express 2011 Dodge Avenger Lux 2011 Dodge Avenger Mainstreet 2009-2010 Dodge Avenger R/T 2008-2009 Dodge Avenger SE 2012-2014 Dodge Avenger SE 2008-2010 Dodge Avenger SXT 2012-2014 Dodge Avenger SXT 2009-2010 Dodge Caliber R/T 2010 Dodge Caliber Rush 2010 Dodge Journey Base 2009-2010 Dodge Journey SE 2005 Ford Thunderbird 50th Anniversary Edition 2002-2005 Ford Thunderbird Base 2004 Ford Thunderbird Pacific Coast Roadster 2009 Jeep Compass Limited 2009 Jeep Compass Sport 2009 Jeep Patriot Limited 2009 Jeep Patriot Sport 2002-2004 Lincoln LS 2002-2003 Lincoln LS LSE 2005-2006 Lincoln LS 2005 Lincoln LS Ultimate What’s In The Box? 1 – Ruthenium Spark Plug Warranty 60 Day Warranty