MSD 8446 Cap-A-Dapt Distributor Cap Adapter Base Spacer

The MSD 8446 Cap-A-Dapt adapter base is a precision-engineered distributor cap spacer designed to adapt a larger style HEI cap onto MSD Billet Ford distributors. This black adapter base serves as the foundation for MSD's Cap-A-Dapt system, allowing you to increase spark plug terminal spacing to prevent crossfire in high-voltage applications.

Key Features:

• Adapter base for MSD Cap-A-Dapt systems (works with PN 8445 and 8420)
• Constructed from durable black Rynite material for high dielectric strength and resistance
• Male/HEI cap style with clamp-down attachment
• Increased spark plug terminal spacing helps prevent crossfire
• Compatible with MSD Billet Ford distributors including 8580, 8582, 8584, 8598, 85805, and 85840
• Provides secure, vibration-resistant mounting

This adapter base is an essential component when upgrading to MSD's larger capacity distributor caps on Ford applications. It provides the proper spacing and mounting interface between your distributor housing and the larger cap assembly, ensuring reliable spark delivery in high-performance and racing applications.