MSD 7AL-2 Plus Ignition Control Black 4-6-8 Cylinder Engines 72223

If you're running a high-RPM engine, ignition consistency directly impacts your lap times and reliability. The MSD 7AL-2 Plus delivers 47,000 volts of spark energy with a 2-step rev limiter to keep your engine in the optimal power band without risk of over-rev damage. Built for 4, 6, and 8-cylinder engines, this ignition box gives you the voltage stability and diagnostic feedback serious racers demand.

The internal upgrades over the original 7AL-2 push spark energy over 40% higher, translating to faster combustion and more responsive throttle feel across your entire RPM range. A built-in diagnostic LED shows coil firing status in real time, eliminating guesswork during tuning sessions. Bolt-on installation using the same mounting pattern as the previous generation makes this a straightforward upgrade path for racers already familiar with MSD systems.

• Secondary Voltage: 47,000 volts
• Spark Energy: 160 mJ per spark
• Primary Voltage: 570 volts
• Operating Voltage: 12–18 volts, negative ground
• Current Draw: 6 amps @ 6,000 RPM; 12 amps @ 12,000 RPM
• 2-Step Rev Limiter: Included, adjustable
• Supplied RPM Chips: 3000, 7000, 8000, 9000
• Diagnostic LED: Coil firing indicator
• Cylinder Compatibility: 4, 6, 8-cylinder
• Mounting: Same as 7AL-2, vibration mounts included
• Dimensions: 8.25" L × 3.75" W × 5.75" H
• Weight: 4.85 lbs
• MPN: 72223