Compatibility: This product is suitable for four-stroke 139cc engines, chainsaws, and lawn mowers. Ignition coils are subject to constant high temperatures and vibration, making them a common wear and tear component. Overheating can cause insulation failure, short circuits, or disconnection within the coils. Therefore, this high-performance replacement ignition coil is designed to repair small garden machinery, such as brush cutters and lawn mowers, that have stopped working due to ignition system failure. It generates a high-voltage spark to ignite the fuel, restoring normal engine start-up and operation. Easy to install: Direct replacement without adjustment, perfect compatibility, and high reliability. Product Material: This product is specially designed with metal materials for a long service life and resistance to damage., Manufacturer: SG Store