NGK Iridium Laser SILZKBR8D8S Spark Plug Specifications Whatever your use or engine set-up the correct choice of spark plug is very important. Iridium is very heavy and dense metal ensuring that NGK spark plugs have a longer lifespan than OEM ones withstanding more than 100.000 km in standard use Compatible with Non-exhaustive list. BMW 1 Series E82/E88 135i (2007-2013) BMW 1 Series F20/F21 125i M135i (2011-2019) BMW 2 Series F22/F23/F87 220i 228i M235i (2013-2021) BMW 3 Series E90/E91/E92/E93 335i/xi (2006-2013) BMW 3 Series F30/F31/F34/F80 320i 328i 335i ActiveHybrid (2011-2018) BMW 4 Series F32/F33/F36/F82/F83 420i 428i 435i (2013-2017) BMW 5 Series F07/F10/F11 520i 528i 535i 550i ActiveHybrid (2011-2017) BMW 6 Series F06/F12/F13 640i (2011-2018) BMW 7 Series F01/F02/F03/F04 740i/Li ActiveHybrid 7 (2012-2015) BMW X1 E84 16i 20i 28i (2011-2015) BMW X3 F25 20i 28i 35i (2014-2017) BMW X4 F26 20i 28i 35i (2014-2018) BMW X5 E70 35i 40i M (2009-2013) BMW X5 F15/F85 28i 35i 40e (2015-2018) BMW X6 E71/E72 35i M (2009-2014) BMW X6 F16/F86 35i (2014-2019) BMW Z4 E89 18i 20i 28i (2011-2016)