An OEM coil comes from the vehicle manufacturer and is part of the vehicle's original ignition system. An OEM (Original Equipment Manufacturer) ignition coil) is supplied with every vehicle sold by an OEM. The ignition coils suited for specific vehicles are designed to meet the requirements of the ignition system of the coil and vehicle. Due to the trust provided by the materials used in the construction, OEMs ignition coils are made with reliable materials which undergo dependable, performance, and rigorous testing, ensuring a superior quality. They work with all the parts of the igniting system and the car’s power supply that need to be controlled. While aftermarket ignition coils offer several options, OEM ignition coils are recommended for those who want to maintain the ignition system’s reliability and efficiency.