Ford F-150 Left Bank Ignition Coil AL3Z-12029A / BL3E-12029AC Replacement DG525 UF631

When your Ford F-150 accelerates with hesitation, idle jitter, noticeably higher fuel consumption, or check engine light on, this is typically a symptom of a left bank ignition coil aging or failure. This part, when functioning, converts low voltage to high voltage to precisely ignite the air-fuel mixture in the cylinders, ensuring smooth engine operation and power output. This product is a left-bank exclusive replacement, OEM number BL3E-12029-AC, also compatible with AL3Z-12029A, BL3Z-12029-A, DG525 and UF631, suitable for 4-cylinder F-150 engines. During installation, be sure to disconnect the battery negative, ensure ignition coil plug and spark plug sleeve are completely dry and oil-free, and tighten to the manufacturer's specified torque to avoid excessive tightening that could damage insulation.