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72223 7AL-2 Plus Ignition Control w/Built-In 2-Step Rev Control & Diagnostic LED [Black]
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MSD IGNITIONPART NUMBER: 121-72223

72223 7AL-2 Plus Ignition Control w/Built-In 2-Step Rev Control & Diagnostic LED [Black]

$92995
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7AL-2
    7AL-2 Plus Ignition Control
  • Built-In 2-Step Rev Control
  • Diagnostic Troubleshooting LED
  • Terminal Strips Ease Hookup
  • Includes: 3, 7, 8, 9K RPM Chips
  • Black

    Operating Specifications

  • Spark Energy: 160 mJ per spark
  • Primary Voltage: 570 volts
  • Secondary Voltage: 47,000 volts (tested with Pro Power Coil)
  • Spark Series Duration: 20° crankshaft rotation
  • RPM Range: 14,000 RPM with 14.4 volts
  • Voltage Required: 12-18 VDC Negative Ground
  • Current Draw: 6 amps per 6,000 RPM / 12 amps per 12,000 RPM
  • Size: 8.25" L x 3.75" W x 5.75" H
  • Weight: 4.85 lbs


    From NHRA to Circle Track, it'll make you a winner...

    MSD 7AL-2 Plus features a built in two-step rev control and diagnostic LED. This ignition delivers full power at any RPM. Multiple-spark discharge circuitry improves throttle response, off-corner performance, idle, and launch consistency. Built-in, soft touch rev control protects the engine from over-rev damage. The 7AL-2 Plus' accurate rev-limiting action is smooth without backfires. Adjustments are easily made with plug-in modules, and the ignition can be triggered from points, magnetic pickups, crank triggers, and electronic amplifiers.




  • Built-in 2-step rev control
  • Operates on 4, 6 or 8-cylinder engines
  • Diagnostic Troubleshooting LED
  • Terminal strips for convenient hookup
  • Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    No Timing Compromises

    Ignition timing is always a compromise between cylinders. The dynamics of air and fuel flow into each cylinder is never exactly the same no matter how much machining magic has been done. This has always caused top engine builders to compromise their ignition timing. With the Programmable 7-Series Race Ignition Boxes advanced Individual Cylinder Management system and other exact timing programs, you will never need to compromise again.

    Show More

    When you need race-proven ignition performance that won’t let you down, the MSD 7-Series Race Ignition Boxes are built to deliver. Engineered for serious competitors, these ignition systems offer unmatched spark energy, advanced features, and rugged construction to handle the harshest racing conditions.

    The MSD Digital 7 ignition box delivers ultra-fast processing power and precision timing control, making it the ideal choice for high-horsepower drag, circle track, and off-road applications. With programmable RPM limits, timing curves, and data acquisition capabilities, this unit gives racers the ultimate edge in tuning and customization.

    For those looking for legendary performance in a straightforward design, the MSD 7AL-2 remains a favorite in the racing community. It’s known for delivering a powerful capacitive discharge spark throughout the RPM range while providing built-in rev control and compatibility with MSD’s RPM modules for quick adjustments at the track.

    The MSD 7-Series line stands apart with its durability, consistent output, and seamless integration with other MSD components. Whether you're pushing big boost, nitrous, or high compression, these ignition boxes provide the spark intensity and reliability needed to keep your engine firing strong—pass after pass.

    Built for racers who demand precision and power, the MSD 7-Series Race Ignition Boxes are the backbone of countless winning setups. Trust MSD to ignite your competitive edge and help you dominate the race day.

Part TypeIgnition Box
Product LineMSD 7-Series Race Ignition Boxes
BrandMSD IGNITION
Package Height4.6
Package Width6.5
Package Length13.0
Weight6.75 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Rpm14,000
Vendor Part Number72223
Package Qty1
Package TypeEA
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