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.

SKU 8412
Barcode # 85132084128
Brand MSD
Shipping Weight 0.1100kg

Be The First To Review This Product!

Help other Superior Auto Parts users shop smarter by writing reviews for products you have purchased.

Write a product review

More From This Category