MSD : 8420 : Distributor Cap - Cap-a-Dapt - Adjustable Rotor

MSD Cap-a-Dapts If the new Pro-Cap doesn’t work on your application, these MSD Cap-A-Dapts will do the trick. The MSD Cap-A-Dapt adapts a large, Ford style cap onto your MSD distributor. This large cap spaces the spark plug terminals farther apart which prevents the chances of cross-fire and ionization from occurring. Spark plug style terminals used on the cap for tight connections that will not vibrate loose. The rotor is injection molded out of Rynite® for incredible strength and resistance to spark.
  • Thick vanes are incorporated to stir up the air in the cap for even more prevention of ionization occurring.
  • Three Cap-A-Dapts are available; two with a fixed rotor and another with an adjustable, two piece rotor.
  • The Two Piece Rotor allows you to adjust the rotor tip to cap terminal alignment so you can adjust the rotor phasing.
  • All of the MSD Distributors are phased at the factory, but if you are running a Multi-Step Retard or Timing Controller, having the ability to adjust the rotor phasing is beneficial.
  • The Cap-A-Dapts will install on most MSD Billet and Pro-Billet Distributors (except the Ford FE, PN 8594). Both kits are supplied with a high quality cap with brass terminals, rotor and cap spacer.

    Availability: Usually ships the next business day.

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