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Buy 3 Tires, Get 4th Tire Free Instantly
Buy 3 Tires, Get 4th Tire Free Instantly. Receive a discount equal to the price of a single tire when four tires are added to the cart. Valid on select in stock tires only. Those tires for which discount is available will be identified in search results & product detail pages. All other tires and special order tires are excluded from this offer. Valid when scheduled for installation on and installation is completed between 6/26/17 through 9/30/17.

MSD Digital 6AL-2 w/2-step limiter 9955437
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  • Part #: 6421|
  • SKU: 9955437

Available tomorrow

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    • All new housing, digital circuits and performance
    • Built-in 2-Step rev control, with rotary dials

MSD Digital 6AL-2 w/2-step limiter

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 will 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 135millijoules! 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, digital circuits and performance
  • Built-in 2-Step rev control, with rotary dials
  • Higher output with up to 135mJ and 535 volts
  • Accepts Hall-effect, points and mag pickup triggers
  • Managed by an efficient digital control
  • This product is restricted in some areas and is not available for Shipping.

Current Draw
0.7 amps per 1,000 RPM
Secondary voltage
45,000 Volts
Spark Output (mill joules)
135 Mill joules
Ignition Control Output
Capacitive discharge
Rev Limiter
Type of Rev Limiter
2 Step Adjustable Dials
Voltage Required
12-18V, Negative Ground
Terminal Type
Sealed locking connector, 2 heavy ring lugs, 6 easy on's
CD Voltage Output/Coil
535 V
Spark Series Duration
20 Degrees of Crankshaft Rotation


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