MSD Ignition Connector Coil, Red, 1996-1997 GM engines, Individual - 8231Entry level spark output for GM vehicles with single connector. Part Number: 8231 Used on 1996 1999 GM vehicles. Features and Benefits CARB E. O. Approved Works with stock ignition as well as MSD Ignitions 80: 1 turns ratio and lower primary resistance produce high voltage output Direct performance replacement for GM Coil, 1996 1999