These Accel coils feature state-of-the-art internal components, producing higher performance than stock ignition coils. Designed to assure maximum available spark energy, fast coil rise time and extremely high voltage output. Using late model OEM configuration for easy bolt-on installation. The custom finned cap serves as a voltage dam, preventing arcing and flash over. Accel Super Coils have a limited lifetime warranty and come in three versions. Made in U.S.A.