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MSD Ignition 8225 - MSD Blaster & Replacement Coils

MSD Ignition 8225 - MSD Blaster & Replacement Coils

MSD Ignition#121-8225

GM HEI Distributor Coil
  • CARB E.O. #D-40-37
    • Fits Applications:
    • 1974-1989
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    MSD Ignition 8225 - MSD Blaster & Replacement Coils Details

    HEI Coil


  • 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 121-83647 Module)
  • 50 State Legal
  • CARB E.O Number D-40-37
  • Special low induc­tance
  • High temperature windings which charge faster for increased spark energy at higher rpm
  • Designed to withstand harsh race applications as well as daily use wear and tear
  • Delivers more spark energy to the spark plugs
  • Mounts in the stock HEI cap and installs in minutes

    Coil Specs:
  • Turns ratio: 70:1
  • Primary resistance: .31 OHMs
  • Secondary resistance: 9.2K OHMs
  • Inductance: 3.5 mH
  • Maximum voltage: 42,000 Volts (Tested with 6AL Ignition)
  • Peak current: 200 mA
  • Spark duration: 200 uS

  • MSD Ignition 8225 - MSD Blaster & Replacement Coils

    MSD Blaster and Replacement Coils work with stock ignition and MSD-equipped vehicles and all have direct, bolt-on connection with improved materials and windings for increased output voltage performance.

  • Improved High RPM Operation
  • Patented winding design and materials
  • Direct bolt-in to factory connectors

    JEGS Easy Kits are designed by JEGS Professionals to help you get all the performance parts you need.

  • MSD Ignition 121-8225

    Manufacturer's Part Number:
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