Steel Distributor Gear — Ford 289/302, 0.468" I.D.

$149.95

Steel distributor gear for Ford 289/302 carbureted distributors with a 0.468-inch gear I.D. Listed for MSD 8582, 8579, 8479, 8352 and 8503, and built to stay accurate over the miles.

  • RC 55-60 hardened layer - wear resistance where the load actually is.
  • Developed; not guessed - test fixtures and hundreds of hours of metallurgy behind the alloy.
  • Melonite QPQ coating - cuts friction and initial wear.
  • Micro polished - smooth contact from the first mile.
  • Known applications - MSD names the distributors it fits.

Install Level: Professional

Fits distributors with a 0.468-inch gear I.D. only.
Match gear material to your camshaft before installing.

SKU: 85833

⚠️
WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead. Learn more.
Steel Distributor Gear — Ford 289/302, 0.468" I.D.
$149.95

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Overview
Specifications
Tech Resources
Compatibility

The gear is the weak link. Fix it first.

MSD's steel replacement drive gear for carbureted Ford distributors with a 0.468-inch inside diameter — and MSD names the units it fits: 8582, 8579, 8479, 8352, and 8503. Special alloy, Melonite QPQ coated, hardened to RC 55-60.

A distributor's performance is only as good as its drive gear. MSD put real work into this one — building test fixtures and spending hundreds of hours evaluating metallurgical compositions, heat treating, and coatings before settling on the alloy used here.

What came out of it is a gear built to stay accurate as miles add up. The outer hardened layer runs RC 55-60 for wear resistance where the load actually is. Interstitial carbide concentration improves wear resistance over the gear's life. The surface is micro polished for smooth contact, and a Melonite QPQ coating cuts friction and initial wear.

MSD's own summary: long life, an easy break-in period, and reliable performance. One thing to settle before ordering — gear material has to match camshaft material, and MSD does not publish which camshaft materials this steel gear is approved for.

What's In the Box

The gear itself:

  • x1 Steel Distributor Drive Gear — Special Alloy, Melonite QPQ Coated, 0.468" I.D.
  • Whether a roll pin is supplied is not stated on the manufacturer listing
  • Fits: Ford 289 / 302 carbureted distributors with a 0.468" gear I.D.
  • Listed for MSD distributors 8582, 8579, 8479, 8352, and 8503.
  • Gear I.D.: 0.468". Hardened Layer: RC 55-60. Coating: Melonite QPQ.
  • Camshaft compatibility is not published by MSD. Match gear material to your camshaft before ordering.
  • Emissions: Code 5 — legal on emissions-controlled, uncontrolled, and racing vehicles. Prop 65 warning.
MSD part number 85833
Steel drive gear - special alloy
Gear inside diameter: 0.468 inch
Outer hardened layer: RC 55-60
Interstitial carbide concentration for wear resistance
Micro polished surface
Melonite QPQ coating
Listed for MSD distributors 8582; 8579; 8479; 8352 and 8503
For Ford 289 / 302 carbureted distributors

Questions? Talk to the FFG Team

For fitment questions or build-specific guidance, the FFG team has you covered.

Email: info@fatfender.com

Call: (480) 621-6072

Ford 289 / 302 carbureted distributors with a 0.468 inch gear I.D.
Listed for MSD distributors 8582; 8579; 8479; 8352 and 8503.
Camshaft compatibility is not published by MSD.

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