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MSD 6AL-2 Series Multiple Spark Ignition Controller 6421

MSD 6AL-2 Series Multiple Spark Ignition Controller 6421
MSD 6AL-2 Series Multiple Spark Ignition Controller 6421MSD 6AL-2 Series Multiple Spark Ignition Controller 6421MSD 6AL-2 Series Multiple Spark Ignition Controller 6421
$529.99 ea
NEWARRIVING SOONEstimated Ship Date 06/10/2022 (If Ordered Today)89 available from HOLLEY PERFORMANCE PRODUCTS as of 05/27/2022
Model: 2038379
Supplier has not provided any fitment data for this product.
[More Info]

IMPORTANT: Electrical items are covered by a 30 day EXCHANGE ONLY WARRANTY. There are no returns or refunds on such items.

MSD is excited to announce the next generation of 6-Series ignition controls– the 6AL-2. The all new ignition control combines a new housing, new digital controls and more power in a sleek package. Inside the new cast aluminum housing you'll find an advanced micro-controller that manages the timing and rpm of the ignition. The spark output of the new box has been turned up to 535 volts of primary voltage with spark energy reaching up to 135 millijoules. The multiple sparks of the 6AL-2 burn in the cylinder for 20 degrees of crankshaft rotation to ensure complete combustion. Two more great features are the rev limits. There are two rev limiters; one for high end overrev protection and another you can activate off a clutch or transbrake to set a launch limit. This feature will help your car blast off the starting line. Adjustments are made via four rotary dials for 100 rpm increment control. The all new capacitive discharge ignition will easily connect to nearly any 12-volt negative ground distributor system.
  • All new housing; same reliable digital circuitry and performance
  • Built-In 2-Step Rev Control Adjustable w/Rotary Dials
  • Higher Output w/Up To 135Mj Of Spark Energy
  • Accepts Hall-effect; points and mag pickup triggers
  • Managed by an efficient digital processor
Holley Performance Emission Code 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
Installation Notes:
CARB EO # D-722-2
About MSD Ignition

Your performance electronic source for ignitions, coils, distributors, timing controls, spark plug wires, starters and electronic fuel injection.


Download Name File Size



Color Red
Current Draw .7 Amp per 1000 RPM
Emission Code 1
Features Rev Limiter
Part Type Ignition Control Module
Primary Voltage 535
RPM 12500
RPM Range 12,500 RPM with 14.4 Volts
Secondary Voltage 45000
Spark duration 20 Degree Crankshaft Rotation
Spark Energy 135 mJ per spark
Voltage 12-18 V; Negative Ground
Voltage Required 12-18 Volts, Negative Ground
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm
Weight and Size 3 lbs.,7"L x 4"W x 2"H


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