ULTRA 6A Ignition Box Black

The MSD IGNITION ULTRA 6A Ignition Box in Black (part number 62023) is a digital capacitive discharge ignition system engineered to deliver multi-spark firing events and extreme voltage output for high-performance engine applications. Built on proven CDI technology, this 45,000-volt ignition box transforms spark quality and engine response across naturally aspirated and moderately boosted engines, making it a core component for serious enthusiasts pursuing maximum ignition energy and consistent combustion.

The 6-amp capacity and multi-spark capability ensure that each cylinder receives multiple firing events per combustion cycle, dramatically improving fuel ignition reliability under high RPM conditions and lean mixture scenarios. The 45,000-volt output provides the raw electrical potential needed to bridge larger spark gaps and overcome fouling, a critical advantage when running modified engines, exotic fuel blends, or extended spark plug intervals. The compact black housing measures 9.88 by 2.75 by 11 inches and weighs just 2.3 pounds, allowing for flexible mounting in engine bays with space constraints while maintaining thermal stability during extended operation.

This ignition box is engineered for street and strip vehicles where conventional ignition systems fall short—drag racing platforms, street-performance cars, marine engines, and off-road vehicles that demand bulletproof spark reliability under extreme load. MSD's capacitive discharge architecture minimizes dwell time variation and delivers consistent coil saturation, eliminating the weak spark events that plague standard distributors and points-based systems. Whether upgrading an existing vehicle or building a performance platform from the ground up, the ULTRA 6A addresses the ignition limitations that constrain combustion efficiency and power output.