The Megaspark 4 is a high energy coil from Lumenition which is ideal for use with the Optronic or Magnetronic electronic ignition systems to obtain the best spark possible. It has been designed to complement these electronic ignition systems so you can be confident of 100% compatibility. The coil is supplied with a ballast resistor which must be used unless the vehicle currently has a 1.5 Ohm ballast resistor fitted, in which case, that can be used instead.High energy output for an improved spark and optimised engine performanceComplements Lumenition optronic and Magnetronic electronic ignition systemsIncludes a 1.5 Ohm ballast resistorSuppled with a mounting bracket for ease of installation