MSDIGNITION Ignition Coil Blaster Coil High Vibration CARB EO: D-40-37 MSD Ignition Coil - Blaster Series - High Vibration - Black Universal - Add To Any MSD 6-Series Ignition The Blaster Coil is designed to mount in most factory canister coil mounts. MSD also offers a Chrome Coil Bracket, PN 8213. It is recommended to mount the PN 8202, PN 82023, and 8223 coils in an upright position. The High Vibration Coil, PN 8222, can be mounted in any position due to its epoxy potting compound. In applications such as off-road, marine, or other harsh conditions, the MSD Blaster High Vibration Coil is the best choice. This protects the coil's internal components from high and low-frequency vibrations that are commonly experienced in racing. The sturdy metal housing of the High Vibration Coil is completely potted with a premium grade epoxy to completely encase the coil's primary and secondary windings. Improved output coil for electronic ignitions, and MSD Ignitions (ballast resistor required for points) Metal canister is encased with epoxy to protect the windings from high vibration applications CARB E.O. Approved 100:1 turns ratio and lower primary resistance produce high voltage output