Jacobs Ignition Coils

Jacobs Coils have what's called a Variable Magnetic Core. The core automatically regulates spark intensity, delivering a hotter spark under heavy engine demand, and lower levels during low engine demand. You get the correct voltage every time, resulting in more horsepower, torque, and gas mileage. These coils are for the street king, racer, or RVer who places high demands on a coil.