Distributor Gear Bronze .484in BBM 383 440

The COMP CAMS Distributor Gear Bronze .484in BBM 383 440 (Model 424) is a precision distributor drive component engineered for small-block and big-block Mopar B-Series and RB-Series engines, including the legendary 426 Hemi. This bronze gear serves as the critical interface between the engine's crankshaft and distributor shaft, translating rotational force to maintain precise ignition timing under all operating conditions. Bronze construction provides superior wear resistance and durability compared to alternative materials, making it the preferred choice for high-performance and street applications where reliability is non-negotiable.

Specifications matter in engine assembly. The .484-inch shaft diameter is manufactured to exacting tolerances to ensure a secure, wobble-free fit with OEM and aftermarket distributors. Bronze's lower hardness relative to steel creates a sacrificial wear surface—the gear wears preferentially rather than damaging the distributor shaft itself, extending overall drivetrain service life. At 0.64 lbs, this is a precision component sized appropriately for Mopar application without unnecessary mass. Each gear is supplied as an individual unit, allowing builders to select matched sets for specific engine configurations.

This distributor gear is essential for engine builders, vintage Mopar enthusiasts, and shop technicians rebuilding or restoring B-block (318, 340, 360) and RB-block (383, 400, 440) power plants. Whether you're assembling a numbers-matching restoration, upgrading an existing engine, or repairing a failed ignition drive system, OEM-compatible distributor gears ensure proper timing control without compromise. COMP CAMS' reputation in performance engine components makes this gear a trusted choice among serious builders who understand that ignition timing stability depends on gear integrity.

Mopar engines from the muscle car era through modern restorations rely on correct distributor drive components to achieve consistent ignition advance. Bronze distributor gears for 383, 440, and 426 Hemi applications are foundational to any engine assembly where timing accuracy is critical. This COMP CAMS part is compatible with both original equipment distributors and most aftermarket units designed for Mopar big-block platforms, making it a versatile rebuild component for shops and builders stocking inventory for multiple applications.