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🔥 Seal the deal with National’s ultimate heat-defying pinion seal!
The National 4278 Differential Pinion Seal features a spring-loaded, multi-lip design crafted from durable fluoroelastomer. Engineered to perform reliably across a wide temperature range (-40°F to 400°F) and compatible with various automotive fluids, it delivers long-lasting, high-quality sealing solutions trusted by professionals for over 75 years.
| Manufacturer | Federal Mogul |
| Brand | NATIONAL |
| Product Dimensions | 10.16 x 1.91 x 0.25 cm; 9.07 g |
| Item model number | 4278 |
| Manufacturer Part Number | 4278 |
| Item Weight | 9.07 g |
L**I
Good
Good
S**S
Good product
Met our needs, great price
D**E
Perfect replacement.
Exact fit replacement. Easy to install.
9**T
Not for sterling 10.25” full floater.
Probably a good seal, I’ll never know since it doesn’t fit my axle
C**.
Exact OEM Part for 2012 F-150
Exact OEM replacement part for 2012 F-150 pinion seal.
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