and Performance Parts and Accessories
84665 - 1987-93 MSD Hei / Fuel Injection Ignition Module (Factory Replacement)
If your vehicle is equipped with a GM factory HEI distributor, upgrade to MSD components during your next tune-up. You'll enjoy increased performance, longer life and maximum dependability.
Note:Replacement module for MSD distributor 8366. Per MSD is a direct replacement for the Mallory 612 module. No further discounts apply.
1987-93 V8 w/FI exc. LT-1 engines