Iridium IX Spark Plugs (Set of 4) Universal / See Applications Below Manufactured by NGK | Part #6509/LTR6IX-11 These high-performance spark plugs from NGK offer a plethora of benefits for your vehicle. Features: Sold as a Set of Four (4) OE Heat Range Designed for Naturally Aspirated Engines Iridium Alloy Construction Trivalent Metal Plating Provides Consistently Stable Spark Extremely High Melting Point Increased Acceleration and Fuel Efficiency Perfect for increasing acceleration while providing greater fuel efficiency and extreme ignitability. The spark plugs remain in the stock heat range, making them the ideal choice for your naturally aspirated engine. Specification Spanner Size: 16 mm Outer thread [mm]: 14 Thread Length [mm]: 25 Spark Position [mm]: 3,5 Spark Plug: Fixed SAE connector, Iridium Middle Electrode, 1 - Earthed Electrode, interference Suppression 5 kOhm, with taper gasket seat NGK: Spark Plug Manufacturer part number: 6509 Manufacturer: NGK Use number: NGK: LTR6IX-11 Please Note: These spark plugs are designed for Naturally Aspirated use ONLY. Forced Induction and/or Nitrous Applications, please speak to us for further recommendations. Due to various engine applications please check the correct spark plug gap required for engine & use. Vehicle Application: Universal application includes but not limited to: Chevrolet Captiva 2010-2018 Chrysler 300C 2011- Chrysler Grand Voyager 2011- Dodge Avenger 2012-2014 Dodge Challenger 2011- Dodge Charger 2011-2014 Dodge Durango 2011- Fiat Freemont 2011- Ford BMax 2012- Ford CMax 2010- Ford Fiesta 2008- Ford Focus 2002-2004 / 2010- Ford Fusion 2010-2012 Ford Galaxy 2010-2015 Ford Grand C-Max 2010- Ford GT 2016- Ford KA 2003-2008 Ford Kuga 2013- Ford Mondeo 2007-2015 Ford S-Max 2010-2014 Ford StreetKA 2003-2005 Ford Tourneo 2013- Ford Transit 2013- Jeep Grand Cherokee 2010- Jeep Wrangler 2011- Lancia Thema 2011- Lancia Voyager 2011-2014 Mazda 3/5/6 2004- Mazda MX-5 2005-2014 Ram 1500 2014- Saab 9-5 2010-2012 Vauxhall Insignia 2008-2017 Volvo S60 2010-2015 Volvo S80 2010- Volvo V40/V60/V70 2012- Volvo XC60 2009-2014 *Please double check part & vehicle application using NGK Part Finder