The ignition coil for a gasoline engine is manufactured by high-density magnet wire winding. The product is based on the epoxy sealing technology that can maintain high-voltage insulation performance as well as layer core technology, alignment winding, split winding, bank winding, etc. Ignition coils manufactured by Toyo Denso are suited to every ignition system and have won the confidence of customers as small, large-output, high-reliability products.