MSD Distributor Drive Gear 8581; Aluminum, Bronze 0.530 in. for Ford 351C, 351M, 400, 429, 460

MSD Bronze Distributor gears are machined from quality AMPCO 45 aluminum bronze containing 5 percent nickel. This special combination creates high-strength gear teeth that are less prone to wear even with high volume oil pumps. Features increased outer hardened layer thickness (RC 55-60). Micro polished surface for smooth contact. Proprietary formulated ductile iron. Melonite QPQ coated reduces friction and initial wear. Interstitial carbide concentration improves wear resistance and running properties.