MSD Chev HEI Distributor Low Resistance Distributor Cap Bushing # MSD8412 Rate_10 Using state-of-the-art racing technology

Using state-of-the-art racing technology

as are some of the popular metric sizes

AC Delco: D514A

NPT inlet and outlet fittings

MSD Chev HEI Distributor Low Resistance Distributor Cap Bushing # MSD8412 Rate_10 Using state-of-the-art racing technologyMSD Chev HEI Distributor Low Resistance Distributor Cap Bushing # MSD8412 HEI Bushing, Carbon Button, Low Resistance, GM HEI Cap, Each Distributor Replacement Part Type: Carbon button Quantity: Sold individually. MSD Low Resistance HEI Bushings MSD low resistance HEI bushings prevent excessive heat buildup. The carbon rotor button in a stock HEI distributor cap has very high resistance. When the high voltage of an MSD 6, 7, or 8 Series ignition is