Subaru Ignition Coil 22433-AA230/AA240 Improve ignition efficiency

Subaru ignition coil high-voltage packs, part numbers 22433-AA230 and AA240, can be directly replaced by this replacement part and are compatible with 22433AA360, 88921342 and other common models for 4-cylinder engines. Core function is to raise low voltage to high voltage to ensure stable spark plug ignition and improve combustion efficiency. After installation, it can resolve acceleration hesitation, startup difficulty, rough idle, and rising fuel consumption, especially for aging vehicles to restore power. Signs of aging include weak hill climbing, engine fault light, or noticeable roughness on cold starts.