MSD Ignition#121-8225GM HEI Distributor Coil
MSD Ignition 8225 - MSD Blaster Replacement Coils Details
HEI owners now have a choice to replace their stock coil with the MSD High Energy Unitized Coil for GM HEI Distributors. The coil features special low inductance, high temperature windings which charge faster to give you increased spark energy at higher rpm. The premium epoxy filled construction is designed to withstand harsh race applications as well as the wear and tear that daily usage dishes out, and still deliver more spark energy to the spark plugs. The MSD Coil mounts in the stock HEI cap and installs in minutes. To receive the most from the coil, it is recommended to replace the module with MSD's powerful HEI Module, P/N 121-83647.
Top off your GM, Ford, or Chrysler Ignition system with these great new replacement coils. Blaster Coils have MSD performance in factory style housings! MSD designed these coils by combining their Blaster Coil experience with E-core coil efficiency. The coils have a unique turn ratio, plus lower primary resistance than stock coils. This all amounts to a bolt-in replacement coil that produces more output voltage. These coils work with stock ignition and MSD-equipped vehicles.