MSD 6421 6AL-2 Digital CD Ignition, RPM Limiter, 535V, Rotary Adjustments

MSD 6421 6AL-2 Ignition Control

MSD 6AL-2 Ignition Control Module

MSD 6421 Red 6AL-2 Ignition Control Box With Built-In 2 Step Rev-Limiter

MSD Performance 6421 6AL-2 Ignition Control Built-in 2 Step Rev-Limiter NHRA

MSD 6AL-2 Ignition Boxes 6421

MSD 6AL-2 Multiple Spark Discharge Rev Limiter Ignition Control 6421

MSD 6421 Universal Red 6AL-2 Ignition Control Module with 2 Step Rev-Limiter