Gaskets and Seals› Drivetrain Gaskets and Seals

NATIONAL

OIL SEAL

$27.73

SKU: N038 4278

In Stock
In Stock
Ships by Jun 18
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The National 4278 is a differential pinion seal designed for 2010 and earlier models, as well as specific 2004-2004 Ford F-150 and 2015-2018 Ford Transit applications. This seal is crucial for preventing leaks from the differential housing.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandNATIONAL
Part NumberN038 4278

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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