Mopar 426-440 RTR Distributor

The Mopar 426-440 RTR Distributor from MSD Ignition is engineered for serious enthusiasts building or restoring high-displacement Chrysler big-block engines. Whether you're developing a street performer or a dedicated track machine, this distributor addresses the ignition demands of 426 and 440 cubic-inch Mopar power plants. RTR (Ready-To-Run) designation means you get a complete, bolt-in solution that eliminates the guesswork of point-and-condenser setups while delivering the spark timing accuracy modern performance demands.

MSD's RTR distributors combine proven mechanical advance mechanisms with sealed construction that resists contamination in harsh under-hood environments. The unit features application-matched curves that optimize ignition advance across the RPM range typical of 426 and 440 engines, ensuring proper flame-front development at idle, cruise, and peak power output. Built-in components eliminate external module boxes and complex wiring, reducing installation footprint and potential failure points while maintaining the reliability required for consistent performance on street or strip.

This distributor is ideal for rebuilds, engine swaps, and performance upgrades on Mopar-powered vehicles from the 1960s through early 1980s that originally ran 426 Hemi or 440 Magnum variants. Installation fits directly into existing Mopar-pattern distributor bosses without modification, making it compatible with original or period-correct engine bays. Buyers appreciate the maintenance-free operation and improved cold-start response compared to aged OEM distributors, plus the reliable spark that modern high-octane fuel and optimized fuel delivery systems demand.