Ford Mercury Ignition Coil 88921347 Replaces F6DU-12A-366AB

If your Ford or Mercury vehicle has rough idle, hesitating acceleration, MIL is on, or cold starts are difficult, the likely cause is aging ignition coils causing insufficient spark energy. This coil converts low voltage to high voltage to ensure spark plug ignition for all cylinders, maintaining smooth operation and power. OEM number 88921347, also compatible with OEM F6DU-12A-366AB, fits various Ford and Mercury six-cylinder engines. Installation requires disconnecting the negative battery terminal first and ensuring tight coil-to-spark plug connections to avoid secondary faults from poor contact.