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🚀 Seal the deal with National – where precision meets endurance!
The National 4278 Differential Pinion Seal is a premium, spring-loaded multi-lip seal designed for select Ford Transit and F-150 models (2015-2018). Engineered to endure extreme temperatures from -40°F to 400°F, it ensures superior fluid retention and leak prevention. Trusted by professionals and backed by over 75 years of National’s sealing expertise, this seal delivers reliable, long-lasting performance for your vehicle’s differential.
| ASIN | B000C5J0U4 |
| Best Sellers Rank | #34,606 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Differential Seals |
| Brand | National |
| Brand Name | National |
| Container Type | Bottle |
| Customer Reviews | 4.5 out of 5 stars 197 Reviews |
| Global Trade Identification Number | 00724956125289 |
| Included Components | Multi Purpose Seal |
| Item Form | Grease |
| Item Weight | 0.02 Pounds |
| Liquid Volume | 946 Milliliters |
| Manufacturer | National |
| Material | Fluoroelastomer |
| Model Number | 4278 |
| Number of Items | 1 |
| Package Information | Bottle |
| Part Number | 4278 |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Automotive differentials |
| UPC | 724956125289 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 400 Degrees Fahrenheit |
O**Y
Old Guy
Perfect fit for my ford pick up pinion seal.
B**D
worked as it should
worked as it should. no leaks for 25k+ miles
D**E
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.
J**.
fit fine
havent rechecked for leeks
J**Z
Muy bueno
Queda perfecto
A**O
1
Bien.
A**J
No leaks
Fit in great as the original no more leaks. I put it on a 2009 F-150 2WD rear differential.
B**N
seal
works well, very cost effective
T**S
So far
As described looks solid and good will update on friday if it truly fits
C**A
Fits a Sterling 10.25" differential
Fit on a 1994.5 f350 with sterling 10.25" rear.
J**E
Great product
Seems like better quality than the OEM seal and worked perfect for my 2021 F150.
9**T
Not for sterling 10.25” full floater.
Probably a good seal, I’ll never know since it doesn’t fit my axle
S**S
Good product
Met our needs, great price
Trustpilot
1 month ago
4 days ago