MSD 83647 HEAT HEI Module

Add to Favorite Sellers. MSD 83647 HEAT HEI Module. High output replacement HEI module with built-in rev limiter. Easily installs to non-computer controlled (4-Pin) HEI housings. Built-in adjustable rev limiter can easily be set externally. Advanced dwell control for improved high rpm output. Produces an incredible 8.5 amps of juice! Customer Service & Feedback. So […]