The carbon rotor button in a stock HEI distributor cap has very high resistance. When the high voltage of an MSD 7-Series Ignition is added, this resistance builds up heat and can actually melt the distributor cap. The solution to this problem is the use of the MSD Low Resistance HEI Bushing which will pass the secondary voltage from the distributor cap to the rotor without excessive heat buildup.

More From This Category

MSD Distributor Weight, Kit

MSD Distributor Weight, Kit

$47.65

MSD HEI Distributor Advance Stop Plate, Adjustable, Street Fire, Pro-Billet Distributors, Kit

MSD HEI Distributor Advance Stop Plate, Adjustable, Street Fire, Pro-Billet Distributors, Kit

$22.31

MSD Coil Cover, Converts Internal to External Coil, Coil not Included, Black, GM, HEI, Each

MSD Coil Cover, Converts Internal to External Coil, Coil not Included, Black, GM, HEI, Each

$151.02

MSD Magnetic Pickup, Replacement for Distributors, Each

MSD Magnetic Pickup, Replacement for Distributors, Each

$95.88

FAST XR-3000 Points Conversion Kit for Import 4, 6 and 8 Cylinder Engines

FAST XR-3000 Points Conversion Kit for Import 4, 6 and 8 Cylinder Engines

$311.48