Flame-Thrower III coils feature a ultra low resistance and are designed specifically for the new Ignitor III ignition system. Flame Thrower III coils have a high turns ratio and ultra low primary resistance enabling the ignition system to charge faster at Product Features:PerTronix 44011 Flame-Thrower III Coil 45,000 Volt 0.32 ohm Black45,000 volts.