Beginner — under 30 min
Description
This seal has a temperature range of -40 Deg F to 225 Deg F (-40 Deg C to 107 Deg C) and includes patented SURE-LOCK ribs to prevent shaft leaks and bore contamination. Its specifications include a housing bore of 113.030 mm, an outside diameter of 4.460 inches, a shaft diameter of 88.900 mm, and a width of 0.843 inches.
Fitment
Fitment Guaranteed
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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 370179A |
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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