Ultra 6AL Ignition Box Black Finish

The Ultra 6AL Ignition Box Black Finish from MSD IGNITION is a professional-grade digital capacitive discharge (CD) ignition system engineered for high-performance engines that demand precision spark timing and reliability. Designed for street and strip applications, this ignition box replaces conventional points-and-condenser or older electronic systems, delivering multi-spark capability across the entire RPM band. Whether you're upgrading a classic muscle car, street rod, or performance truck, the Ultra 6AL provides the spark intensity and timing control necessary for optimal combustion and maximum power output.

At its core, the Ultra 6AL generates 45,000 volts of spark energy—significantly higher than stock ignition systems—ensuring hot, reliable ignition even under lean fuel conditions or high cylinder pressures. The multi-spark technology fires multiple sparks per ignition event, improving flame kernel development and combustion efficiency across idle through high-RPM operation. A built-in 3-step rev limiter provides adjustable engine protection by cutting spark at user-selectable RPM thresholds, preventing over-rev damage during aggressive acceleration or downshifts. The black powder-coated finish resists corrosion and heat, while the compact housing (10.25 x 3 x 10.9 inches) fits easily under most engine bays. MSD's proven digital architecture eliminates the dwell-angle limitations of mechanical systems, maintaining consistent spark strength regardless of engine speed.

Enthusiasts and professional tuners favor the Ultra 6AL for naturally aspirated and forced-induction engines where spark demand exceeds factory capability. Installation is straightforward—the included harness connects directly to the distributor and vehicle battery, eliminating complex rewiring. This system is ideal for carburetor or fuel-injected engines running modern fuel blends or alternative fuels where ignition margin is critical. Users should verify distributor compatibility and existing wiring before installation to ensure optimal performance and longevity.