Gaskets and Seals› Drivetrain Gaskets and Seals

NATIONAL

OIL SEAL

$31.77

SKU: N038 3638

In Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The National 3638 is a manual transmission input shaft seal designed for specific vehicle applications. It features a multi-lip, spring-loaded design constructed from polyacrylate material. This seal offers a wide temperature range from -40°F to 225°F and exhibits low swell in hydrocarbon fluids, making it resistant to EP lubricants.

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 3638

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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