【OE Design】Spark Plug Replace OEM Part Number: 97506 SILZKBR8D8S 12120039664. Our Spark Plugs meet or exceed OE specifications for form, fit and function and are perfect for automotive replacement spark plugs. 【Multivehicle Compatibility】Iridium Spark Plugs 97506 Compatible with BMW 2014-2016 228i 428i 328i GT xDrive 428i xDrive, 2015-2016 228i xDrive 428i Gran Coupe 428i xDrive Gran Coupe, 2012-2016 328i 528i xDrive 528i, 2012-2018 320i, 2013-2016 328i xDrive, 2012-2015 X1, 2013-2017 X3, 2015-2018 X4, 2016-2018 X5, 2012-2016 Z4, ect. For more information about the fit, please check the picture or detail page. 【Superior Quality】The SYKRSS spark plug is made of precious iridium metal, embedded with copper core, plus ceramic insulator, with strong ignition performance,fast starting, improve fuel efficiency, prolong the service life features. They are widely used in automobiles, motorcycles, airplanes, garden tools, yachts, industrial engines and many other fields. Automobile replacement spark plugs can save fuel consumption and improve automobile performance. 【Strict Quality Test】 In order to solve common ignition system faults such as backfiring, misfiring, stalling, car shaking, engine jerking, poor idling, clogged spark plugs, poor fuel economy, check engine light illuminated etc. All spark plugs iridium are tested under strict quality control to ensure that the spark plug coil can output high voltage stably and work reliably under operating conditions and throughout the engine speed range, which provides you better performance spark plugs. 【What You Get】You can get a package including spark plug *4, manual *1. SYKRSS ensures you with an 1 year pleasant experience and top customer service. Please feel free to let us know if have any questions about this spark plug iridium,we will respond to you within 48 hours. SYKRSS Set of 4 Iridium Spark Plugs 97506 Compatible with BMW 228i 428i 528i xDrive 328i GT xDrive 428i xDrive Gran Coupe 428i Gran Coupe X1 X3 X4 X5 Z4 320i 528i 2.0L L4 Replacement for SILZKBR8D8S