1. The function of the ignition coil is to change the low-voltage direct current into high-voltage electricity, the voltage can reach tens of thousands of volts, and the spark plug in the cylinder breaks through the air ionization to generate electric sparks. 2. Installation position: engine 3. Material: plastic 4. OE: 12138616153, 12131712219, 12131712223, 12137550012, 12137551049, 12137551260, 12137562744. This is for reference only, please confirm the model before buying. 5. Suitable for BMW E87/F30/F80/F33/F83 2004-2011
