Gaskets and Seals› Engine Gaskets and Seals

NATIONAL

OIL SEAL

$363.30

SKU: N038 418303

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The National Multi-Purpose Seal (418303) is a spring-loaded, multi-lip seal made from Fluoroelastomer (FPM), designed for a temperature range of -40°F to 400°F (-40°C to 204°C). It offers excellent high-temperature capabilities and compatibility with a wide range of fluids. Key dimensions include a housing bore of 8.500 inches (215.9mm), an outside diameter of 8.507 inches (216.07mm), a width of 0.625 inches (15.875mm), and a shaft size of 7 inches (177.8mm).

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 418303

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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