宝马点火线圈0221504467 12137551049 精准点火低油耗

When your BMW exhibits idle jitter, weak acceleration, MIL illumination, or even cold-start difficulty, it often indicates aging or breakdown of the original ignition coils, resulting in insufficient ignition energy or misfire. This ignition coil converts low voltage to high voltage to ignite the mixture; suitable for multiple 4-cylinder BMW models. OEM numbers 0221504467 / 12137551049. Use specialized tools to plug/unplug; avoid damage to the boot; ensure tight contact between coil and spark plug with no looseness.