福特点火线圈 UF646 DG548 替换原厂 增强点火效率

Your Ford vehicle with idle jitter, weak acceleration, higher fuel consumption and check engine light on likely caused by ignition coil aging resulting in insufficient ignition energy or intermittent misfire. This part converts low voltage to high voltage to precisely ignite air-fuel mixture and ensure smooth operation and power. Replaces OEM numbers UF646, DG548, DG549, BL3Z12029A/B/C; fits several Ford models (Focus, Kuga, Mondeo, etc.). Installation must be done with the engine cold; ensure coil contact surfaces with spark plugs are clean and oil-free; follow original torque standards to avoid over-tightening and damaging threads.