These make a great performance upgrade to any N54 / N55. 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 misfire.
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. The item "NEW Genuine BMW E90/E92/E93 3-Series Ignition Coil By Eldor OEM 12138657273 X6" is in sale since Wednesday, February 17, 2021. This item is in the category "Vehicle Parts & Accessories\Car Parts\Ignition\Ignition Coils & Modules".The seller is "joseph-haugh" and is located in Swindon. This item can be shipped worldwide.