奇瑞QQ472高压点火线S11-3707020BA 适配西门子系统

Chery QQ472 high-voltage ignition coil, OEM number 3707020BA, installed between engine ignition coil and spark plug to stabilize high-voltage current to the combustion chamber and ensure proper combustion of the mixture. Specifically designed for Chery QQ472 engines using Siemens systems, suitable for S11 series models. Installation difficulty low to medium; about 30 minutes; suitable for owners with basic DIY skills. If the engine runs rough, accelerates weakly, fuel consumption rises, or the engine fault light is on, ignition coil aging or leakage is indicated and replacement is needed.