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MSD Ignition Red Ultimate HEI Kit GM


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Red Ultimate HEI Kit GM
2 left in stock
Red Ultimate HEI Kit
  • GM
  • Includes Brass Terminal Cap, Rotor, Module, Coil and Dust Cover
  • Free Shipping - Ships

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    8501 is rated 5.0 out of 5 by 3.
    Rated 5 out of 5 by from Wish I would have had long ago! I have only driven the car a few times since installing. It is in a 79 Trans Am with a 403. I have owned the car for 16 years and it has never started so quick or run so smooth. I was apparently suffering from a weak spark without even knowing it.
    Date published: 2016-08-04
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    Would this work for a 383 stroker

    Asked by: Jose
    The MSD 121-8501 cap fits HEI distributors.
    Answered by: jshook
    Date published: 2023-08-11
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    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.