BBM 426-440 Distributor Pro-Billet w/Black Cap

The MSD 85465 BBM 426-440 Distributor Pro-Billet with Black Cap is a high-performance ignition distributor engineered specifically for big-block Mopar RB-series engines and 426 Hemi applications. This pro-grade billet distributor combines MSD's proven ignition technology with a robust mechanical advance system, delivering precise timing control and consistent spark delivery across the full RPM range. The HEI-style terminal design ensures compatibility with modern ignition systems while maintaining the reliability demanded by serious Mopar builders and enthusiasts.

The pro-billet construction provides superior durability and heat dissipation compared to cast alternatives, critical for high-output engines that generate extreme cylinder pressures and thermal stress. The magnetic pickup system delivers stable signal acquisition across varying RPM conditions, eliminating the jitter common in older points-based distributors. Mechanical advance calibration on this model is optimized for large-displacement naturally aspirated engines, progressively advancing timing as engine speed increases to maximize power and efficiency throughout the power band. The black cap housing resists UV degradation and corrosion while providing professional appearance in engine bays.

This distributor is purpose-built for Mopar RB-series and 426 Hemi engine platforms, making it the choice for street performance, drag racing, and restoration builds where authentic bolt-in capability matters. Whether upgrading a classic muscle car with modern ignition reliability or building a dedicated competition engine, the BBM 426-440 Pro-Billet delivers the spark timing precision necessary for consistent horsepower and drivability. MSD's reputation for quality ignition components makes this unit a trusted specification among professional Mopar engine builders and dedicated enthusiasts who demand proven performance without compromise.