MSD 7908 Pro Mag 12LT Ignition Magneto Generator Chevy Red Lightweight

The MSD 7908 Pro Mag 12LT Generator is a high-performance ignition magneto engineered specifically for sprint car and drag racing applications. Built for Chevrolet V8 engines, this lightweight magneto delivers the same powerful ignition output as the original Pro-Mag while shedding nearly 30% of the weight — a critical advantage on the track.

The 12LT features an all-billet aluminum housing measuring just 3.5 inches in diameter, sitting an inch lower than standard Pro-Mag units for improved clearance around fuel injection systems and tunnel rams. Timing adjustments are made easy thanks to the integrated band clamp mount design. The magneto utilizes a magnetic pickup with 16 rare earth magnets for rock-steady performance without the need for recharging.

Key Features:

• Delivers 12 amps and 40,000 volts of spark energy
• Built-in rev control supports up to 12,000 RPM
• 26-degree spark duration for consistent, powerful ignition
• Compact billet housing — 3.5" diameter — for increased manifold and injector clearance
• Housing sits 1 inch lower than standard Pro-Mag for improved fuel injection clearance
• Compatible with MSD crank trigger systems
• Exclusive cap injection-molded from DuPont Rynite — high dielectric strength and durability
• Cap features HEI-style brass terminals
• Locking rotor clamps to shaft via retaining bolt assembly, also molded from Rynite
• Red finish billet housing
• Racing use only — not legal for street or emissions-controlled vehicles

What's Included:

• Pro Mag 12LT Generator
• Bronze distributor gear
• Band clamp
• Cap and rotor

Note: The 12LT Generator cannot be upgraded to a 20 Amp Pro-Mag. Requires MSD Electronic Points Box PN 8106 (sold separately).