BMW Direct Ignition Coil - Eldor 12138643360

  OEM replacement direct ignition coil for B58/S58 Motors -Upgrade your N54 with B58 coils Here! -Upgrade your N55/S55 with B58 coils Here! Your BMW's direct ignition coil provides the power in order for your spark plug to "spark". If your BMW is suffering from a misfire issue it is likely due to a worn ignition coil or bad spark plug. One way to test for a bad ignition coil is to swap the ignition coils and see if the misfire follows the suspected bad ignition coil. We also recommend using dielectric grease when installing new ignition coils. It will protect the spark plug boot and create a water/dust-tight seal. Great for added ignition performance. Note: Eldor coils do not come in Eldor branded packaging as Eldor does not have an aftermarket sales division. This coil will come in a white box or box with BBT Technologies branded on it. The part number on top of the coil in both cases will read "750-990012" or "R1705S00100" with a production date/time stamp underneath. Direct Ignition