MSD Ignition Control Box 6AL2 With Rev Control



  • Cast Aluminum Housing
  • Increases Power
  • Easier Starting
  • Reduced Pug Wear
MSRP $479.00
You save 10%

MSD 6AL2 Ignition Control Box With Rev Control.

This new MSD Ignition Control Box 6421 will help your vehicle blast off from the starting line! Upgrade your engine’s performance with the 6AL-2—part of the newest generation of 6-Series ignition controls from MSD. There is no comparison when you stand this ignition control box against your stock, inductive ignition. Your new and improved ETs on the strip will leave you grinning from ear to ear.

MSD Control Box Features and Benefits:
- All-new cast-aluminum housing
- New digital circuits and controls
- Quicker ET times and easier starting
- Reduced plug wear
- More power
- Timing control
- Increased fuel economy
- Two-step touch rev control managed by micro-controller
- Four rotary dials, adjustable by 100 RPM increments
- Connects to most 12-volt negative ground distributor systems

The new MSD Ignition Control Box 6421 with Rev Control has all-new, sleek, cast-aluminum housing, new digital circuits and controls and more power than ever before. The built-in, two-step rev-limiter is managed by an advanced micro-controller. There are two rev limiters—one for high end over rev protection and another activated off a clutch or transbrake to set a launch limit. The adjustments are made with four rotary dials which are adjustable in 100 RPM increments. The spark output of the new box can go up to 535 volts of primary voltage with spark energy reaching up to 135 mJ. The multiple sparks of the 6AL-2 burn in the cylinder for 20 degrees of crankshaft rotation to ensure complete combustion. Best of all, the MSD 6AL-2 ignition box easily connects to most 12-volt negative ground distributor systems.

Ignition Control Box Specifications:
- Spark energy: 135 mJ per spark
- Primary voltage: 535 volts
- Secondary voltage: 45,000 volts
- Spark series duration: 20 degree camshaft rotation
- RPM range: 12,500 with 14.4 volts
- Voltage required: 12-18 volts with a negative ground
- Current draw: .7 amp per 1,000 RPM

Please Note: This same make and model of ignition control box is available in metallic black (MSD6AL2B) as well.

If you are looking to improve the ignition or fuel system on your classic car or truck, CJ Pony Parts has a wide range of MSD ignition components and fuel system equipment. MSD is one of the aftermarket's leading manufacturers of ignition controls, coils, timing accessories, spark plug wires and electronic fuel injection conversion equipment. MSD Ignition Controls have come to be the ignition solution company of choice for many of the top professional drivers around the world.

Order an MSD 6421 Ignition Control Box 6AL2 with Rev Control from CJ Pony Parts today!

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Related Categories: Mustang Parts, Mustang Engine, Mustang Ignition System, Mustang Ignition Boxes, Ford Bronco Parts

Installation Difficulty


Intermediate skill is required for this installation.

Installation Videos

Video Transcript

We’re here with MSD 6AL-2 ignition system for the 1965-1995 Mustang. The original MSD 6AL is probably one of the most popular ignition systems ever made. This AL-2 is gonna be the next generation. It's gonna fit your 1965- 1995 Mustang but will require custom wiring being installed. The 6AL-2 is providing much hotter spark for much better performance and also has a built in Soft Touch Rev Limiter which is fully adjustable. You see here the MSD 6AL-2 actually has two different Rev Limiters. On this side here is your normal Rev Limiter which is the max you want the engine be able to rev to. You simply pull off the little rubber plugs and you turn the screws to adjust it. The secondary one is your two step Rev Limiter for drag racing. It wants you to pick an RPM the car's going to sit at, so when that's activated you can floor the car and it will go to designated RPM, which is perfect for drag racing launch. The MSD 6AL-2 ignition system is an excellent choice for the street or the track.

Vehicle Fitment

This product will fit the following Bronco years:

This product will fit the following C10 years:

This product will fit the following Mustang years:

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