Gaskets and Seals Engine Gaskets and Seals

NATIONAL

OIL BATH SEAL

$141.07

SKU: N038 370064A

In Stock
In Stock
Ships by Jun 14
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The National 370064A is an engine gasket and seal designed for use in heavy-duty trucks. This specific seal is part of the 37 Series, constructed from NBR, silicon, and FKM materials.

It features an inside diameter of 5.625 inches, an outside diameter of 7.194 inches, and a width of 0.906 inches. The seal is suitable for a temperature range of -40°F to 225°F.

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 370064A

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.

View Full Return Policy