Generator 12amp Pro Mag LT - Black

The Generator 12amp Pro Mag LT - Black by MSD IGNITION is a high-output alternator designed for serious engine builders, hot rodders, and performance enthusiasts who demand reliable electrical generation under extreme conditions. Whether you're running a high-revving small-block, a stroker engine, or a heavily modified platform, this 12-amp unit delivers consistent charging output to support demanding accessory loads. Built for vehicles with upgraded ignition systems, fuel injection controllers, and auxiliary electronics, the Pro Mag LT is the go-to choice for engine swaps, restorations, and power adder installations.

MSD's Pro Mag LT technology combines proven permanent-magnet generator architecture with lightweight construction to minimize parasitic drag on your engine while maximizing electrical output efficiency. The compact black housing—measuring 8.4 x 8.4 x 23.4 inches and weighing just 9.58 lbs—integrates seamlessly into tight engine bays without sacrificing performance or requiring extensive bracket fabrication. The 12-amp continuous output rating ensures stable voltage regulation across your entire RPM range, whether idling at a car show or sustained high-speed operation, making it ideal for both street and competition applications.

Mechanics and fabricators favor the Pro Mag LT for engine conversions into classic vehicles, custom builds with integrated computer management, and restorations where modern charging reliability is non-negotiable. Its lightweight design reduces rotating mass and inertial losses compared to factory alternators, translating to measurable horsepower preservation and improved throttle response. Installation is straightforward for experienced technicians; the unit uses standard serpentine belt drives and mounts securely with common bracket configurations found on most small-block platforms, making it an accessible upgrade for both professional shops and dedicated home builders.