SKU: YMS4278 / UPC: 883584300694
Yukon Gear YMS4278 Pinion Seal For 10.25in Ford
The Yukon Gear YMS4278 pinion seal delivers dependable sealing for Ford 9.75-inch and 10.25-inch rear differentials found in E-Series vans, F-Series trucks, Expeditions, and Excursions from 1985 to 2012. This Mighty Seal uses cutting-edge manufacturing to hold gear oil securely and resist leaks over extended use. Vehicle owners trust it for straightforward replacement that maintains drivetrain integrity during off-road adventures or daily driving.
Key Features
- Precise Fitment – Matches Ford Sterling 9.75in and 10.25in axles in numerous models for direct installation without modifications.
- Fluid Retention – Advanced materials and design prevent gear oil leaks ensuring consistent lubrication.
- Durability – Engineered for long-term performance under high-heat and high-pressure conditions.
- Quality Construction – Rubber seal with reinforced casing resists wear and cracking.
- Easy Installation – Drop-in replacement saves time during differential service.
- Proven Reliability – Backed by Yukon Gear engineering for demanding applications.
Specifications
| Detail | Value |
|---|---|
| Brand | Yukon Gear & Axle |
| Type | Pinion Seal |
| Compatibility | Ford 9.75in / 10.25in Sterling Differentials |
| MPN | YMS4278 |
| UPC | 883584300694 |
| Weight | 0.05 lbs |
| Shipping Dimensions | 3.74 x 3.74 x 1.1 inches |
| Country of Origin | Taiwan |
| Warranty | Limited Lifetime |
Whats Included
- 1 x Yukon Gear Pinion Seal YMS4278
Product Notes
- Confirm axle size before purchase using vehicle specifics.
- Replace crush sleeve if damaged during pinion service.
- Use proper seal driver tool for installation to avoid damage.
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 2003-2010 | Ford | E-150 | Base |
| 2006-2007 | Ford | E-150 | Chateau |
| 2006-2010 | Ford | E-150 | XL |
| 2006-2010 | Ford | E-150 | XLT |
| 1999-2002 | Ford | E-150 Econoline | Base |
| 1999-2000 | Ford | E-150 Econoline | XL |
| 2003-2005 | Ford | E-350 Club Wagon | Chateau |
| 2003-2005 | Ford | E-350 Club Wagon | XL |
| 2003-2005 | Ford | E-350 Club Wagon | XLT |
| 1985-1986,1992-1998 | Ford | E-350 Econoline | Base |
| 1987-1991 | Ford | E-350 Econoline | Custom |
| 1985-1998 | Ford | E-350 Econoline | XL |
| 1985-1986 | Ford | E-350 Econoline Club Wagon | Base |
| 1992-2002 | Ford | E-350 Econoline Club Wagon | Chateau |
| 1992-1996 | Ford | E-350 Econoline Club Wagon | Chateau HD |
| 1987-2000 | Ford | E-350 Econoline Club Wagon | Custom |
| 1992-1993 | Ford | E-350 Econoline Club Wagon | Custom HD |
| 1985-1991,2001-2002 | Ford | E-350 Econoline Club Wagon | XL |
| 1994-1998 | F |
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