宝马M3敞篷版 点火线圈 12137838388 引擎动力保障

BMW M3 Convertible (E93, 2008–2013, with N54 or N55 engines) dedicated ignition coil 12137838388; perfectly fits each cylinder of the 4-cylinder engine, ensuring stable and efficient ignition. Core function is to convert low voltage to high voltage to ignite the air–fuel mixture, ensuring smooth power output, reducing jitter, and improving fuel economy. OEM number 12137838388, also compatible with 12127841754 for cross-checking with BMW OEM parts. Replacement difficulty: medium; professional technician recommended; also replace spark plugs to ensure best performance.