Easy — 1–2 hours
Description
This oil seal has a shaft size of 3.375 inches (85.725 mm), an outer diameter of 5.004 inches (127.102 mm), an overall width of 0.468 inches (11.887 mm), and a housing bore of 4.999 inches (126.975 mm). It belongs to the 410000 series and is designated as Seal Type 41.
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
| Brand | NATIONAL |
| Part Number | N038 415025 |
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