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.
Additonal Info On This Product:
MSD Bronze Distributor Gear
These distributor gears fit Chevy V-8's and V-6's Made of aluminum bronze with 5% nickel or ductile iron for strength Resists wear and breakage, even when used with a heavy duty oil pump Fits MSD's distributors with .500" shafts.