ACCEL 140015 Brute Thunder HEI In-Cap Super Coil 48,000 volt maximum voltage Special high temperature epoxy resists shock and vibration Coils come with all necessary hardware Energy at idle is 208 millijoules and energy at 3600 RPM is 46 millijoules Primary resistance is 0.3 ohms and secondary resistance is 8.8 kilo ohms