The MSD 7AL-2 Plus, now offered in black, is the drag-racing staple updated with improved internal components, a built-in 2-Step Rev Control, and a diagnostic LED. Voltage output and spark energy climb over 40% above the original 7AL-2, and two terminal strips make wiring easier in the car.
Specifications:
- Product Type: Ignition Box
- Color: Black
- Primary Voltage: 570V / Secondary Voltage: 47,000V
- Spark Energy: 160 mJ per spark
- Maximum RPM: 14,000 RPM (at 14.4V)
- Current Draw: 6 Amps at 6,000 RPM / 12 Amps at 12,000 RPM
- Voltage Required: 12-18V, Negative Ground
- Rev Limiter: Built-in 2-Step, supplied with 3000/7000/8000/9000 RPM chips
- Weight & Size: 4.85 lbs., 8.25"L x 3.75"W x 5.75"H
- Part Number: 72223
Operates on 4, 6, or 8-cylinder engines and uses terminal strips for convenient hookup; mounting pattern matches the original 7AL-2.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What's different about the 72223 vs the standard 7AL-2 Plus?
It's functionally identical to PN 7222 — 570V primary, 160mJ spark energy, and a built-in 2-Step Rev Control — but finished in black instead of gold.
Is the black 7AL-2 Plus street legal?
No. It carries Emission Code 4, meaning it's legal for sale and use only on Racing Use Only vehicles.
What rev limiter chips are included?
It ships with 3000, 7000, 8000, and 9000 RPM plug-in chips for its built-in 2-Step Rev Control.
What engines is it compatible with?
It works on 4, 6, or 8-cylinder engines and is rated to 14,000 RPM at 14.4 volts.
