MSD 84111 Extreme Output GM HEI Distributor Cap with Coil Cover - Red

The MSD 84111 Extreme Output GM HEI Distributor Cap is a high-performance replacement cap engineered specifically to handle the demands of MSD's high-output HEI ignition systems. Developed alongside MSD's 20 Amp Extreme HEI Module, this cap is custom-molded to withstand the elevated electrical output that standard GM HEI caps cannot reliably manage.

This cap installs directly onto stock GM HEI distributor housings with no modifications required, and is also compatible with MSD's HEI Pro-Billet Distributor (PN 8365). It is molded from high-quality, voltage-insulating material designed to resist carbon tracking and deliver consistent spark distribution across all cylinders.

Key Features:

• Custom-molded cap built to withstand high-output HEI ignition systems
• Compatible with MSD HEI Pro-Billet Distributor (PN 8365) and stock GM HEI distributors
• Includes both a stock GM rotor bushing and MSD Low Resistance Bushing (PN 8412) for maximum compatibility
• Coil cover (PN 84022) with built-in wire retainers included
• Red finish for easy identification and a performance look
• Drop-in fit on stock HEI distributor housings — no modifications needed
• Legal for sale and use on emissions-controlled and non-emissions-controlled vehicles

What's Included:

• MSD 84111 Extreme Output HEI Distributor Cap (Red)
• Stock GM rotor bushing
• MSD Low Resistance Bushing (PN 8412)
• Coil Cover with wire retainers (PN 84022)

The MSD 84111 is the ideal upgrade or replacement for any GM V8 HEI application where ignition reliability and maximum energy transfer are a priority, whether on the street or at the track.