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🚀 Seal the deal with National – where precision meets power!
The National 4278 Differential Pinion Seal is a high-performance, spring-loaded multi-lip seal crafted from durable fluoroelastomer. Engineered to fit a broad range of Ford vehicles from 1999 to 2018, it withstands extreme temperatures from -40°F to 400°F and resists fluid degradation, ensuring reliable differential protection. Trusted for over 75 years, National delivers premium sealing solutions that keep your drivetrain running smoothly and leak-free.
| Asin | B000C5J0U4 |
| Best Sellers Rank | #263,296 in Automotive (See Top 100 in Automotive) #24 in Automotive Replacement Differential Seals |
| Brand Name | National |
| Container Type | Bottle |
| Customer Reviews | 4.5 4.5 out of 5 stars (204) 4.5 out of 5 stars |
| Global Trade Identification Number | 00724956125289 |
| Included Components | Multi Purpose Seal |
| Item Form | Grease |
| Item Weight | 9.07 g |
| Liquid Volume | 946 ml |
| Manufacturer | National |
| Material | Fluoroelastomer |
| Model Number | 4278 |
| Number Of Items | 1 |
| Part Number | 4278 |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Automotive differentials |
| Unit Count | 1 Count |
| Upc | 724956125289 |
| Upper Temperature Rating | 400 °F |
User
Old Guy
Perfect fit for my ford pick up pinion seal.
User
worked as it should
worked as it should. no leaks for 25k+ miles
User
Make sure you have the right part number.
Did not fit. But my fault, I didn't know that there were early and late models.
User
fit fine
havent rechecked for leeks
User
Muy bueno
Queda perfecto
User
1
Bien.
User
Didn’t fit
Didn’t fit my ford f150 2001
User
No leaks
Fit in great as the original no more leaks. I put it on a 2009 F-150 2WD rear differential.
User
Great product
Seems like better quality than the OEM seal and worked perfect for my 2021 F150.
User
So far
As described looks solid and good will update on friday if it truly fits
User
Fits a Sterling 10.25" differential
Fit on a 1994.5 f350 with sterling 10.25" rear.
User
Not for sterling 10.25” full floater.
Probably a good seal, I’ll never know since it doesn’t fit my axle
User
Good product
Met our needs, great price
Trustpilot
3 weeks ago
2 weeks ago