斯巴鲁三菱通用点火线圈22433AA221，替代AA222/AA280，F523品质

Subaru and Mitsubishi 4-cylinder ignition coil, OEM 22433AA221; directly replaces original 22433AA222 and 22433AA280 and compatible with F523 standard. Mounted on the engine; converts low voltage to high voltage to drive the spark plug for ignition and stable operation. Replacement difficulty is medium; estimated 1–1.5 hours; pay attention to high-voltage harness connections and bolt torque. If acceleration is weak, idle jitter, engine fault lamp on, or starting is difficult, the part is usually degrading.