MSD Cap-A-Dapts


MSD Ignition
MSD Cap-A-Dapts

Product images may differ from actual product appearance.

Cap-A-Dapts adapt Ford-style caps onto most MSD Billet and Pro-Billet Distributors (except Ford FE #121-8594). Spark plug terminal spacing on the caps is farther apart to prevent the chance of crossfire and ionization. Spark plug-type terminals provide tight connections that will not vibrate loose. Cap-A-Dapts come with an adjustable 2-piece or a fixed rotor. Rotors are injection molded out of Rynite for incredible strength and spark resistance, and thick vanes stir air even more for additional ionization prevention. The 2-piece rotor allows adjustment of rotor tip-to-cap terminal alignment so you can modify rotor phasing. Although MSD distributors are phased at the factory, being able to change it is beneficial if you use a multistep retard or timing controller. Cap-A-Dapts also include a cap spacer.



Cap-A-Dapts

121-8420
Cap-A-Dapt with 2-pc Adjustable Rotor
View this item
MPG
$47.99
Ships

121-8445
Cap-A-Dapt with Fixed Rotor
View this item
Installation Instructions for MSD Ignition MPG
$42.99
Ships

121-8441
Cap-A-Dapt with Fixed Rotor
  • For small diameter distributors
    View this item
    MPG
  • $56.99
    Ships

    121-8123
    Cap-A-Dapt with Fixed Rotor
  • For Pro Mag 12
    View this item
    MPG
  • $202.99
    Ships
    02/22/12
    Replacement Parts

    121-8421
    Cap-A-Dapt Adjustable Rotor
    View this item

    Fits Applications
    MPG
    $29.99
    Ships

    121-8446
    Cap-A-Dapt Base
    View this item
    MPG
    $19.99
    Ships