MSD 8585 Ford 351W Bronze Distributor Gear AMPCO 45 with Roll Pin

The MSD 8585 is a bronze distributor drive gear precision-machined from AMPCO 45 aluminum bronze — a premium alloy containing 5% nickel — specifically designed for Ford 351W small block engines running camshafts that require a bronze distributor gear, such as roller cam setups.

The AMPCO 45 material produces high-strength gear teeth that resist wear even under the increased load demands of high-volume oil pumps, making this an ideal choice for performance and racing builds where durability and timing accuracy are critical. Unlike standard steel or iron gears, the bronze alloy is safe for use with performance camshafts that specify a non-ferrous mating surface.

Key Features:

• Machined from AMPCO 45 aluminum bronze with 5% nickel for superior strength and wear resistance
• Designed for camshafts requiring a bronze distributor gear, including racing roller cams
• High-strength gear teeth resist wear even with high-volume oil pumps
• .530" inner diameter (I.D.) shaft fitment for Ford 351W
• Kit includes a rolled roll pin for excellent installation strength
• Gear break-in lubricant included
• Sold individually

This gear carries Holley/MSD Emission Code 5, meaning it is legal for sale or use on emissions-controlled vehicles, uncontrolled vehicles, and racing-use-only vehicles, as it does not affect vehicle emissions and is not covered by emissions regulations.