MSD has put significant research into metallurgical composition, heat treating, and coatings to create a durable, accurate, strong distributor gear. This special iron alloy gear is treated with a low-friction coating process for long life and an easy break-in period.
Specifications:
- Category: Ignition
- Distributor Type: Accessories
- Product Type: Distributor Gear
- Gear I.D.: 0.500in
- Material: Proprietary formulated ductile iron
- Hardness: Outer hardened layer, RC 55-60
- Coating: Melonite QPQ coated
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 8561
Designed for use with MSD Chevy Marine Distributors.
FAQ
What distributors does the MSD 8561 gear fit?
It's designed for MSD Chevy Marine Distributors.
What is the gear I.D. of the 8561?
0.500 inch.
What material is the MSD 8561 gear made from?
A proprietary formulated ductile iron alloy with an increased outer hardened layer (RC 55-60).
What coating does the 8561 have?
Melonite QPQ coating, which reduces friction and initial wear.
What benefits does this gear offer?
Long life, an easy break-in period, and reliable performance.

