MSD
MSD Ignition Coil - HEI
Part # 8225
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For GM HEI Distributors
MSD Ignition Coil - HEI
Estimated Ship Date: 08/29/2025
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$122.95
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1
Emissions
This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.
See Emissions DetailsHEI owners now have a choice to replace their stock coil with the MSD High Energy Unitized Coil for GM HEI Distributors. This coil is a direct replacement of the stock coil and offers increased spark energy when used with the MSD HEI Module, PN 83647.
The MSD HEI Coil is designed for use with the MSD High Output HEI Module, PN 8364. It will work with stock ignition modules, but for maximum output use the MSD HEI Module.
Features:
- Direct performance replacement for GM HEI coil-in-cap distributors
- 70:1 turns ratio and lower primary resistance produce high voltage output
- Full power sparks to 9,000 RPM when used with 83647 MSD HEI Module
- Recommended for use with MSD HEI Module PN 83647
- CARB E.O. Approved
| Brand | MSD |
|---|---|
| Category | Ignition |
| Emission Code | 1 |
| Inductance | 3.5 mH |
| Maximum Voltage | 42,000 Volts |
| part type | Ignition Coil |
| Peak Current | 200 mA |
| Primary Resistance | .31 OHMs |
| Product Type | Ignition Coils |
| Secondary Resistance | 9.2K OHMs |
| Spark Duration | 200 uS |
| Sub Category | Ignition Coil |
| Turns Ratio | 2.917361111111111 |
| Warranty | Manufacturer's Limited 1 Year Warranty |
| UPC | 085132082254 |
| Warning | California Proposition 65 |
| Part Number | 8225 |
![Low Resistance Bushing for HEI Distributor]()
Low resistance bushing will pass the secondary voltage from the distributor cap to the rotor without excessive heat buildup.$23.66Qty:
1
This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured Federally Certified vehicles
- 1968 and newer Foreign manufactured vehicle
Manufacturer's Limited 1 Year Warranty: See Details
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Some parts are not legal for use in California or other states with similar regulations.