Gaskets and Seals› Engine Gaskets and Seals

NATIONAL

OIL SEAL

$21.45

SKU: N038 4918

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

Easy — 1–2 hours

Description

The National 4918 is a multi-purpose oil seal with a spring-loaded, single-lip design. It is constructed from polyacrylate material and offers resistance to EP lubricants and low swell in hydrocarbon fluids. This seal is designed to operate within a temperature range of -20 Deg. F to 300 Deg. F (-29 Deg. C to 49 Deg. C).

This National seal features a housing bore of 82.000 mm, an inside diameter of 1.787 in, and an outside diameter of 3.238 in. The shaft diameter is 45.390 mm, and it has a thickness and width of 0.335 in. It is part of the National 4000 series and is identified as type 83.

Fitment

Fitment Guaranteed

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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 4918

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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