Description:

Compatible Vehicle - for Z4 3.0L 2003-2016,for X6 4.4L 2008-2016,for M6 Gran Coupe 4.4L 2014-2016,for M6 4.4L 2012-2016,for M5 4.4L 2013-2016,for Alpina B6 xDrive Gran Coupe 4.4L 2015-2017,for 750i xDrive 4.4L 2010-2017,for 750i 4.4L 2009-2017,for 650i xDrive Gran Coupe 4.4L 2013-2016,for 650i xDrive 4.4L 2012-2016,for 650i Gran Coupe 4.4L 2013-2016,for 650i 4.4L 2012-2016,for 550i xDrive 4.4L 2011-2016,for 550i GT xDrive 4.4L 2010-2017,for 550i 4.4L 2011-2016. Replaces OEM Part Numbers - 0 221 504 470,12 13 8 647 689,12 13 8 616 153,12138616153,0221504470,12137594937,12137562744,12137571643,00044. Premium Quality Material - You'll have an easy time mounting these coils due to their lightweight and winding construction. The copper material ensures maximum power delivery to the spark plugs. They come pre-greased for direct replacement.Superior winding process yields greater wire length control, which means less chance of a breakdown of the wire coating and insulation. Material resists pinholes and cracks that can cause failures.. Function & OEM Fit - OCPTY Ignition Coils are engineered for original equipment and replacement applications.Every component either matches or improves on the OE design to ensure fast and easy installation with superior performance and reliability.The ignition coil acts like a transformer.the ignition coil transforms the electrical energy from the vehicle battery into high voltage, saves it briefly and then emits it as a high voltage current pulse to the spark plug..