Moderate — 2–4 hours
Description
This oil seal is constructed from Fluoro-Elastomer and can operate within a temperature range of -40°F to 400°F (-40°C to 204°C). Its specifications include a housing bore of 2.834 inches, an inside diameter of 42.000 mm, and an outside diameter of 72.200 mm.
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
| Brand | NATIONAL |
| Part Number | N038 711057 |
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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