Ford Ignition Coil UF646 DG548 Replacement OEM Enhanced Ignition Efficiency

When your Ford vehicle exhibits idle shake, sluggish acceleration, noticeable increase in fuel consumption, or check engine light on, it is very likely the ignition coil aging leading to insufficient ignition energy or intermittent misfire. This part converts low voltage to high voltage to precisely ignite the air–gas mixture in the cylinders to ensure smooth engine operation and power output. This product replaces OEM numbers UF646, DG548, DG549, BL3Z12029A/B/C, compatible with several Ford models (e.g., Focus, Kuga, Mondeo). Installation must be performed with the engine cold, ensure contact surfaces of the ignition coil and spark plug are clean and oil-free, and tighten according to the original factory torque to avoid over-tightening and damaging threads.