The MSD Pro Power Coil is the best choice for short duration applications when MSD 7 or 8 series ignitions are being used. The special coil windings produce the highest voltage and spark energy possible. Other features include rubber shock mounts and wide spaced, screw-type primary wire connectors. The extra tall, high tension spark plug tower uses a spark plug type connector for tight connection and prevents arcing between the primary terminals. Oil-filled, polyester case is a superior spark isolating material which insures that the spark leaves through the high tension tower and not the side of the coil.