Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

National · Brakes & Wheel End
370005A
In stock · ships from Knoxville
This is a National 370005A oil bath wheel seal, part of the Red 37 Series.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 5 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Chevrolet
Ford
Other applications
Chevrolet
Ford
Other applications
Fits many oil-bath wheel ends with the dimensions listed. Always verify shaft diameter (4.765 in), housing bore (6.251 in), and width (0.605 in) before ordering.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 12 of 12.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It is a unitized, nitrile rubber seal with a spring-loaded main lip and patented SURE-LOCK® ribs that prevent shaft leaks and bore contamination. It is designed for oil-lubricated wheel ends on heavy-duty trucks and trailers, where it keeps gear oil in the hub and dirt and water out. You would replace it when you see oil leaking from the wheel hub, during a bearing service, or anytime the seal is damaged or worn.
Part Number: 370005A
WHEEL SEAL 370005A
Category: Brakes
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end