Moroso 97857 - GM HEI Durafire Ignition Module

Ignition Module Replacement PN[72230/72231] And 4 Pin GM HEI Distributor 4/6/8 Cylinders • Fits Moroso DuraFire Distributors Nos. 72230 & 72231 and any 4-pin GM HEI Distributor for 4, 6 and 8 cylinder engines • High-output module delivers consistent dwell, accurate timing, extended durability and high spark output