0
0
Account Login
1-800-345-4545
Gift Cards
Track Order
Help
Click image to zoom
MSD Ignition 6421

MSD Ignition Digital 6AL-2 Ignition Control Box

121-6421

made in usa
Free Shipping Ships

$321.95
$289.76
SAVE $32.19
MSD Ignition Digital 6AL-2 Ignition Control Box $289.76
Out of stock
More than 10 available
QTY
Digital 6AL-2 Ignition Control
  • Per Spark Energy: 135 mJ
  • Built-in 2-Step Rev Limiter with Rotary Dials (No Chips)
  • Red
  • 6421 is rated 5.0 out of 5 by 7.
    Rated 5 out of 5 by from 5 stars sort of Well I did not expect to have to change out my MSD box and so changing two boxes-“I had a spare”. Apparently the MSD Blaster coil was the culprit. I did a Ohmmeter test on the coil and it was in spec I checked the entire harness on my drag car for a short. After frying my spare MSD box I was frustrated. Talking with MSD Tec they revealed that although the coil checked to specs when powered it can short . I bought a new coil and a MSD box Problem solved. I got a repair authorization number from MSD to repair the burnt boxes Hopefully MSD will be kind on the repair cost.
    Date published: 2019-09-18
    Rated 5 out of 5 by from great price easy to set up . I have not completed my project yet. Still working on fuel system. i am installing a power glide with trans brake. I will install MSD Box later also. I still have to order my 90/10 shocks. all of these parts where recommended by my old drag racing buddy. Roger O Smith in Jones county MS. my project is a 1956 chevy pro street truck.
    Date published: 2018-01-14
    Rated 5 out of 5 by from Replacement Bought this unit to replace an older Digital 6 unit that was not serviceable. This unit also all the features that I needed and was a little cheaper that a new Digital 6. This unit is a little smaller that my older unit.
    Date published: 2016-06-14
    Rated 5 out of 5 by from Fantastic ignition I've had this box installed for a month now and performance is far above what my old duraspark was capable of. Fires up instantly, looks great, easy installation, and having a built in 2 step just seals the deal.
    Date published: 2015-11-06
    Rated 5 out of 5 by from Excellent upgrade over the original AL 6 box. Smaller and the ignition indicator light is a real plus to signal proper ignition operation.
    Date published: 2015-09-27
    Rated 5 out of 5 by from MSD is quality I bought this for a 94 Toyota truck. Didn't know I had to order another part for the install to work. Figured it all out. Directions was easy. The launch control is amazing!
    Date published: 2015-08-26
    Rated 5 out of 5 by from MSD with great features!! I purchased this about one month ago. I am so glad that I did because we use it in a stock car. It solved all my issues with my ignition. Easy install and easy to work with.
    Date published: 2015-06-25
    • y_2019, m_11, d_19, h_4
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.2
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_7
    • loc_en_US, sid_10001_10001_962449, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Can a timing controller  be added to this to help start my car ? 

    Asked by: Novaking73
    Not this part, you may want to look at this - https://www.jegs.com/p/MSD-Ignition/MSD-Starter-Saver-w-Signal-Stabilizer/750032/10002/-1
    Answered by: Rusty B
    Date published: 2018-05-31
    • y_2019, m_11, d_20, h_3CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.3-b1
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_1
    • loc_en_US, sid_10001_10001_962449, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Easy Kits

    Items You Need

    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.

    Tools:

    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.