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MSD Low Resistance HEI Bushings 8412

HEI Bushing, Carbon Button, Low-Resistance, GM HEI Cap, Each

Estimated Ship Date: Monday 12/1/2014 Would you rather pick it up? Select Location

Brand: MSD Ignition
Manufacturer's Part Number: 8412
Summit Racing Part Number: MSD-8412

UPC: 085132084128
Distributor Replacement Part Type: Carbon button
Quantity: Sold individually.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

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 added, this resistance builds up heat and can actually melt the distributor cap. To solve this problem, install one of these MSD low-resistance HEI bushings, which will pass the secondary voltage from the distributor cap to the rotor without the excessive heat buildup.


Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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