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

FAST Vacuum Advance Canister

FAST Vacuum Advance Canister

$25.51

MSD Distributor Wire Harness, Replacement 3-Pin, For Ready-To-Run Distributors

MSD Distributor Wire Harness, Replacement 3-Pin, For Ready-To-Run Distributors

$48.48

MSD Distributor Weight, Kit

MSD Distributor Weight, Kit

$48.48

MSD Cam Sync Pickup Kit, Each.

MSD Cam Sync Pickup Kit, Each.

$349.57

MSD Reluctor, Billet Steel, Distributors, Machine to Tune, 8-Cylinder, Each

MSD Reluctor, Billet Steel, Distributors, Machine to Tune, 8-Cylinder, Each

$219.42

MSD Distributor Cap Hold Down

MSD Distributor Cap Hold Down

$153.57