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Iron Distributor Gear for MSD Chevy Distributor, .500 ID 8531

A distributor's performance is only as good as its drive gear.. MSD Ignition has put a great deal of effort into researching and testing a variety of metallurgical compositions, heat treating and coatings to provide you with a durable, accurate and strong distributor gear. MSD engineers have built test fixtures and spent hundreds of hours testing and evaluating the metallurgy of our gears. The result is a special iron alloy gear that is treated to a low-friction coating process. To you this means long life, an easy break-in period and reliable performance!

  • Melonite QPQ coated reduces friction and initial wear.
  • Increased outer hardened layer thickness (RC 55-60).
  • Micro polished surface for smooth contact.
  • Interstitial carbide concentration improves wear resistance and
  • Proprietary formulated ductile iron.

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