MSD 8412 Low Resistance Bushing for HEI Distributor

MSD 8412 Low Resistance Bushing for HEI Distributor

• Made of Ultra High Temp 6-ply Aramid Reinforced Silicone. Max Temperature Rating: 500F
• Meet and exceed SAEJ20 industry standards, ideal for heavy duty pressure connections and provides excellent resistance for high temperature applications
• Great for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system
• UV and ozone resistant
• Silicone hose is NOT compatible with fuel or oil; However, it is compatible with air, water and coolant

With the introduction of our 20 Amp extreme HEI module, we needed an HEI cap and rotor that could withstand the high output. The answer was to mold our own HEI cap, rotor and coil cover. The cap and rotor will fit our HEI Pro-Billet distributor, PN 8365, plus will work on stock applications. 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.