MSD Pro-Cap - Fits MSD Pro Mag Only 91609179 Developed for optimum compatibility with

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MSD Pro-Cap - Fits MSD Pro Mag Only 91609179 Developed for optimum compatibility withTo go with the huge power of the Pro Mag 44, MSD developed a huge cap and rotor, the Pro Cap! The Cap has a big 5" terminal to terminal diameter which ensures spark delivery and prevents the chance of spark scatter occurring inside the cap. The entire assembly is injection molded from Dupont(R) Rynite? material for incredible strength and high dielectric properties. The Rotor features a deep skirt and thick vanes to stir up the air and even the rotor