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Yukon Gear & Axle ZG F9-389 Ring and Pinion Gear Set 3.89 Ratio Ford 9 Inch

(Ford F-150 1975-87, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1962-74, F-100 1957-83 + 21 more models)

Part of: Yukon Gear & Axle ZG Ring Pinion Set Ratio Ford

Other options in this family: Yukon Gear & Axle ZG GM8.2-355 Yukon Gear & Axle ZG GM8.5-373 Yukon Gear & Axle ZG GM12P-390 Yukon Gear & Axle ZG GM8.5-411 Yukon Gear & Axle ZG GM9.5-488

Manufacturer

Picture for manufacturer Yukon Gear & Axle

Part Number

ZG F9-389
5 reviews
Sale Price

$285.97

Estimated ship date Monday, November 23

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Product Details

The Yukon Gear & Axle ZG F9-389 is a high-performance ring and pinion gear set designed specifically for Ford 9-inch rear differentials with a 3.89:1 gear ratio. This USA Standard gear set delivers reliable performance for street, strip, and off-road applications.

Key Features:

  • 3.89:1 gear ratio optimized for balanced acceleration and highway cruising
  • Precision-manufactured using the latest CNC machining technology for exact tooth geometry
  • Heat-treated alloy steel construction for maximum strength and durability
  • Lapped gear surfaces ensure quiet operation and reduced wear
  • Designed for easy installation with proper setup tolerances
  • Compatible with Ford 9-inch rear axle assemblies
  • Backed by a one-year manufacturer warranty

USA Standard gear sets are engineered to meet or exceed OEM specifications, making them an excellent choice for differential rebuilds, gear ratio changes, or performance upgrades. Each gear set undergoes rigorous quality control testing to ensure proper tooth contact patterns and long service life.

Products specifications

Fits

Ford F-150 1975-87, Mustang 1965-73, Bronco 1966-86, Thunderbird 1955-79, Maverick 1970-77, Galaxie 500 1962-74, F-100 1957-83, Fairlane 1957-70, Ranchero 1957-79, Torino 1968-76, Falcon 1960-70, Galaxie 1959-67, Gran Torino 1972-76 + 15 more models

Axle Type

Ford 9 in.

Gear Ratio

3.89

Position

Rear

Prop 65

No

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Great product!

Good price for great name brand car parts. AEM fuel filter very low price and new. Hope the shipping is as great as the price. :)

Autoplicity has great prices on all your car modification needs.

Great website and the ordering was easy too. I like the way they show the full price including shipping and tax. Got the confirmation immediately and the shipment notification the next business day. <br>

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