Yukon Gear Pinion Seal For 10.25in Ford
Technical Data
Ford 10.25 Pinion Seal is the precision solution for sealing your Ford 10.25" rear differential. Yukon Gear engineered this Mighty Pinion Seal to deliver exact fitment, durability, and leak‑free performance. Whether you’re towing, hauling, or daily driving, this seal ensures smooth operation and long‑lasting reliability.
With the Ford 10.25 Pinion Seal, you get premium construction designed to withstand heat, pressure, and heavy use. Yukon Gear is trusted by mechanics and truck enthusiasts across America, making this seal a dependable choice for anyone who values performance and peace of mind.
This Ford 10.25 Pinion Seal is built tough for easy installation and consistent results. Perfect for Ford truck owners, it restores proper sealing, prevents fluid loss, and extends the life of your drivetrain.
Features and Benefits
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Leak Prevention – Creates a tight seal to prevent gear oil leaks.
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Ford Fitment – Designed specifically for Ford 10.25" rear differentials.
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Durable Construction – Built to withstand heat, pressure, and long service life.
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Trusted Brand – Yukon Gear is a leader in drivetrain solutions, known for reliability and performance.
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Improved Reliability – Restores proper sealing and extends differential life.
Built for Ford Tough
Upgrade your drivetrain with the Ford 10.25 Pinion Seal. Whether you’re towing, commuting, or exploring, this seal ensures dependable performance every mile.
Specifications
| Specification | Detail |
|---|---|
| Part Number | yukYMS4278 |
| Model Compatibility | Ford 10.25" Rear Differential |
| Brand | Yukon Gear |
| Kit Type | Pinion Seal |
| Position | Rear |
| Color | Black |
| Inside Diameter | 1.812 |
| Outside Diameter | 3.091 |
| Thickness | 0.485 |
| Universal or Specific Fit | Specific Fit |
| Package Quantity | EA (Each) |
| Warning (CA Prop 65) | Not Applicable |
Installation Instructions
Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 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 | Excursion | Eddie Bauer |
| 2000-2005 | Ford | Excursion | Limited |
| 2004-2005 | Ford | Excursion | XLS |
| 2000-2005 | Ford | Excursion | XLT |
| 1999-2010 | Ford | Expedition | Eddie Bauer |
| 2007-2010 | Ford | Expedition | EL Eddie Bauer |
| 2008-2012 | Ford | Expedition | EL King Ranch |
| 2007-2012 | Ford | Expedition | EL Limited |
| 2011-2012 | Ford | Expedition | EL XL |
| 2007-2012 | Ford | Expedition | EL XLT |
| 2008 | Ford | Expedition | Funkmaster Flex Edition |
| 2006,2008-2012 | Ford | Expedition | King Ranch |
| 2005-2012 | Ford | Expedition | Limited |
| 2004 | Ford | Expedition | NBX |
| 2011-2012 | Ford | Expedition | XL |
| 2004-2006 | Ford | Expedition | XLS |
| 1999-2012 | Ford | Expedition | XLT |
| 2004,2006 | Ford | Expedition | XLT Sport |
| 1999-2000 | Ford | F-150 | Base |
| 2007-2008,2010 | Ford | F-150 | FX2 |
| 2004-2010 | Ford | F-150 | FX4 |
| 2000-2003,2006-2008,2010 | Ford | F-150 | Harley-Davidson Edition |
| 2001-2003,2005-2010 | Ford | F-150 | King Ranch |
| 1999-2010 | Ford | F-150 | Lariat |
| 1999-2003 | Ford | F-150 | Lightning |
| 2008 | Ford | F-150 | Limited |
| 2009-2010 | Ford | F-150 | Platinum |
| 2004-2010 | Ford | F-150 | STX |
| 2010 | Ford | F-150 | SVT Raptor |
| 2008 | Ford | F-150 | THE 60TH ANNIVERSARY EDITION |
| 1999-2010 | Ford | F-150 | XL |
| 1999-2010 | Ford | F-150 | XLT |
| 1985-1986,1997-1999 | Ford | F-250 | Base |
| 1987-1992 | Ford | F-250 | Custom |
| 1995-1996 | Ford | F-250 | Eddie Bauer |
| 1997-1999 | Ford | F-250 | Lariat |
| 1995-1996 | Ford | F-250 | Special |
| 1985-1999 | Ford | F-250 | XL |
| 1993-1999 | Ford | F-250 | XLT |
| 1985-1992 | Ford | F-250 | XLT Lariat |
| 2009-2010 | Ford | F-250 Super Duty | Cabela's |
| 2008-2009 | Ford | F-250 Super Duty | FX4 |
| 2004-2010 | Ford | F-250 Super Duty | Harley-Davidson Edition |
| 2004-2010 | Ford | F-250 Super Duty | King Ranch |
| 1999-2010 | Ford | F-250 Super Duty | Lariat |
| 1999-2010 | Ford | F-250 Super Duty | XL |
| 1999-2010 | Ford | F-250 Super Duty | XLT |
| 1985-1986,1997 | Ford | F-350 | Base |
| 1987-1992 | Ford | F-350 | Custom |
| 1995 | Ford | F-350 | Eddie Bauer |
| 1995-1996 | Ford | F-350 | Special |
| 1985-1997 | Ford | F-350 | XL |
| 1993-1997 | Ford | F-350 | XLT |
| 1985-1992 | Ford | F-350 | XLT Lariat |
| 2009-2010 | Ford | F-350 Super Duty | Cabela's |
| 2008-2009 | Ford | F-350 Super Duty | FX4 |
| 2004-2010 | Ford | F-350 Super Duty | Harley-Davidson Edition |
| 2003-2010 | Ford | F-350 Super Duty | King Ranch |
| 1999-2010 | Ford | F-350 Super Duty | Lariat |
| 1999-2010 | Ford | F-350 Super Duty | XL |
| 1999-2010 | Ford | F-350 Super Duty | XLT |
| 1999-2005,2008-2012 | Lincoln | Navigator | Base |
| 2008-2012 | Lincoln | Navigator | L |
| 2007 | Lincoln | Navigator | L Luxury |
| 2007 | Lincoln | Navigator | L Ultimate |
| 2006-2007 | Lincoln | Navigator | Luxury |
| 2006-2007 | Lincoln | Navigator | Ultimate |
REVIEWS
This Yukon pinion seal fit my Ford 10.25 perfectly. No leaks, easy install, and solid quality.
Ryan S.
Tulsa, OK
Installed this on my F‑250’s rear diff. Excellent quality, perfect fit, and my truck runs smoother now.
Luke M.
Boise, ID
Specifications
Fitment Data
• Engineered for precision compatibility with high-performance builds.
• Tested under extreme mechanical stress for guaranteed structural integrity.
Use the Riot Vehicle Finder to verify exact sub-model compatibility.
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