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MSD 84022 Extreme HEI Coil Cover

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MSD 84022 Extreme HEI Coil Cover
MSD 84022 Extreme HEI Coil Cover

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MSD 84022 Extreme HEI Coil Cover



Q & A

What's in the Box

Replacement coil dust cover for MSD Extreme Output HEI Kit # 547-8502. Made from DuPont Rynite.

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NOTE: Installation of this kit may alter emission levels.

550-929 Instructions (PDF) 

HEI External Timing Adjustment Knob

This little jewel replaces the vacuum advance on an HEI distributor. This allows you to change the timing without having to loosen the distributor - just turn the knob.

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MSD Extreme HEI Rotor

Replacement rotor for MSD Extreme Output HEI Kit 547-8502. To handle the power and the larger coil of the Extreme HEI Ignition, MSD designed this special rotor made from DuPont Rynite.  

The Extreme cap and rotor will fit a stock HEI distributor, but must be used with an Extreme Output External Coil Adapter part # 547-84012 (sold separately).