MSD Pro-Mags are engineered for a wide range of racing applications, and each is supplied with a durable, performance-tested cap and rotor. When space allows, upgrading to this larger-diameter Cap-A-Dapt further reduces the chance of crossfire, and it's especially recommended when a timing control is used to retard timing, since retard affects rotor phasing.
Specifications:
- Part Type: Distributor Cap
- Fits: Band Clamp Pro-Mags
- Part Number: 7455
FAQ
What Pro-Mags does the 7455 fit?
It's a Cap-A-Dapt Kit sized for MSD's band clamp style Pro-Mags.
Why upgrade to a Cap-A-Dapt?
A larger-diameter cap increases terminal spacing, which reduces the chance of crossfire — especially important when a timing control is used to retard timing, since that affects rotor phasing.
Does MSD offer Cap-A-Dapts for other Pro-Mags?
Yes, MSD offers a full line of Cap-A-Dapt kits sized for its different Pro-Mag models.

