Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25

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Home / Automotive / Replacement Parts / Ring & Pinion Gears

Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25

$95.09 USD

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Brand : Motive Gear
Motive Gear F10.25IK is a differential install kit for Ford 10.25" rear axles.
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Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25
Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25
View Detail
Type
Ring & Pinion Gears
Title
Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25
Price
$95.09 USD
Vendor
Motive Gear
Description
Short Summary: The F10.25IK Motive Gear is a premium differential install kit for Ford 10.25" rear axles (12-bolt), covering Ford F-250 and F-350 trucks from 1985 to 1998.It includes all essential components needed for a professional-grade rebuild or gear install.Key Features Axle Fitment: Ford 10.25" (12-Bolt) Gear Ratio Compatibility: 4.89 (Example) Pinion Gear Tooth Count: 8 Ring Gear Tooth Count: 39 Pinion Shaft Diameter: 1.94 Inches Pinion Spline Count: 31 Kit Components: Crush Sleeve or Shim Pack, Cover Gasket or RTV, Pinion Seal, Pinion Nut, Ring Gear Bolts, Pinion & Carrier Shims, Thread Locker, Marking Compound, Brush.Vehicle Compatibility Fits Ford 10.25" Rear Differentials in the following models: Ford 1985–1998 F-250 1985–1998 F-350.Replaces OEM & Aftermarket Part Numbers Ratech: 121K Richmond Gear: 83-1059-B Yukon Gear & Axle: MK F10.25.Warranty & Quality Assurance Backed by a 1-Year / 50,000-Mile Warranty, Motive Gear install kits are engineered for reliability and OE-level performance.Trusted by professionals and enthusiasts alike, Motive Gear delivers consistent quality and dependable drivetrain solutions.

More about this item : Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25

Short Summary: The F10.25IK Motive Gear is a premium differential install kit for Ford 10.25" rear axles (12-bolt), covering Ford F-250 and F-350 trucks from 1985 to 1998.

It includes all essential components needed for a professional-grade rebuild or gear install.

Key Features Axle Fitment: Ford 10.25" (12-Bolt) Gear Ratio Compatibility: 4.89 (Example) Pinion Gear Tooth Count: 8 Ring Gear Tooth Count: 39 Pinion Shaft Diameter: 1.94 Inches Pinion Spline Count: 31 Kit Components: Crush Sleeve or Shim Pack, Cover Gasket or RTV, Pinion Seal, Pinion Nut, Ring Gear Bolts, Pinion & Carrier Shims, Thread Locker, Marking Compound, Brush.

Vehicle Compatibility Fits Ford 10.25" Rear Differentials in the following models: Ford 1985–1998 F-250 1985–1998 F-350.

Replaces OEM & Aftermarket Part Numbers Ratech: 121K Richmond Gear: 83-1059-B Yukon Gear & Axle: MK F10.25.

Warranty & Quality Assurance Backed by a 1-Year / 50,000-Mile Warranty, Motive Gear install kits are engineered for reliability and OE-level performance.

Trusted by professionals and enthusiasts alike, Motive Gear delivers consistent quality and dependable drivetrain solutions.

Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25
Key Features
  • Designed for Ford 10.25" rear axles with a 12-bolt differential cover; suitable for rebuilding differentials on F-250 and F-350 models from 1985 to 1998
  • Kit includes: cover gasket or RTV, crush sleeve or preload shim pack, pinion nut, pinion seal, ring gear bolts, pinion and carrier shims, marking compound, thread locking compound, and brush
  • Built to OE standards for long-lasting performance and gear alignment—suitable for light-duty truck applications and gear replacement or upgrades
  • Compatible with gear sets featuring 8 pinion teeth, 39 ring teeth, 1.94" pinion shaft diameter, and 31-spline pinion design; designed to support 10.25" ring gear outer diameter
  • Backed by Motive Gear’s 1-year or 50,000-mile limited warranty, ensuring reliability and support for demanding driveline rebuilds
  • Includes essential components for a professional-grade rebuild or gear install
Technical Specifications
  • Length : 12.0 lb
  • Width : 11.25 lb
  • Height : 2.0 lb
  • Weight : 1.6 lb
Product Identifiers
  • ASIN B000S6DRQU
  • UPC: 698231017685
Shipping Information
  • Ships From : United States
  • Brand : Motive Gear

Frequently Asked Questions About : Motive Gear Differential Install Kit F10.25IK for Ford 10.25", 12-Bolt, Mini-Kit - Fits Ford F-250/F-350 (1985-1998), Replaces: Ratech 121K, Richmond Gear 83-1059-B, Yukon Gear MK F10.25

01 What is the part number for the Motive Gear differential install kit?

The part number is F10.25IK.

02 Which Ford models does the kit fit?

It fits Ford F-250 and F-350 models from 1985 to 1998.

03 What components are included in the kit?

The kit includes a crush sleeve or shim pack, cover gasket or RTV, pinion seal, pinion nut, ring gear bolts, pinion and carrier shims, thread locker, marking compound, and brush.

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