Distributor Gear Iron .531in 351w

The Distributor Gear Iron .531in 351w from MSD IGNITION is a precision replacement component engineered for Small Block Ford engines requiring reliable ignition system performance. This black melonized iron gear serves as the critical interface between the crankshaft and distributor shaft, transmitting rotational timing information essential for proper engine combustion sequencing. Whether you're rebuilding a classic Ford engine, restoring a vintage muscle car, or maintaining high-performance equipment, a quality distributor gear ensures consistent spark timing and optimal engine operation.

Manufactured from durable iron and finished with black melonite coating for corrosion resistance, this distributor gear features a 0.531-inch shaft diameter engineered to exacting tolerances for precise fit within Small Block Ford distributor assemblies. The melonite surface treatment enhances hardness and wear resistance, critical properties for a component that experiences continuous rotational engagement with the engine's camshaft gear. The compact design—measuring 6.05 x 1.45 x 7.75 inches and weighing just 0.28 lbs—allows seamless integration into OEM and aftermarket ignition systems without modification. MSD IGNITION's engineering expertise ensures this gear meets original equipment specifications while delivering extended service life in demanding engine environments.

Small Block Ford owners and engine builders rely on this distributor gear when replacing worn timing components or upgrading ignition systems to high-performance specifications. Installation is straightforward for technicians familiar with distributor removal and reinstallation procedures. The 0.531-inch shaft diameter is standard for Small Block Ford applications across multiple model years and engine displacement variants. This is an essential wear item for vehicles experiencing rough idle, timing inconsistencies, or distributor shaft play. Maintaining precise gear-to-gear mesh ensures accurate ignition timing, improves fuel efficiency, and prevents engine knock or detonation issues common with worn distributor components.