BCA Standard Replacement Transfer Case Shift Shaft Seal — direct fit for Mercury Mountaineer 5.0L V8 (1997-2001). Genuine quality replacement built to OEM tolerances, ships to all 50 USA states from RevXSC.
Engineered by BCA as a standard replacement grade transfer case shift shaft seal for the 5.0L V8 engine, this NS330385 matches factory mounting points and form factor so install requires no modification. Fits AWD; w/ Borg Warner 4404 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case or AWD; w/ Borg Warner 4405 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case Standard replacement spec — the same dimensions, materials and performance envelope as the original factory part.
Search by any number below — they all match BCA NS330385:
| Year | Make / Model | Engine | Notes |
|---|---|---|---|
| 1997 | Mercury Mountaineer | 5.0L V8 | Fits AWD; w/ Borg Warner 4404 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case or AWD; w/ Borg Warner 4405 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case |
| 1998 | Mercury Mountaineer | 5.0L V8 | Fits AWD; w/ Borg Warner 4404 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case or AWD; w/ Borg Warner 4405 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case |
| 1999 | Mercury Mountaineer | 5.0L V8 | Fits AWD; w/ Borg Warner 4404 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case or AWD; w/ Borg Warner 4405 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case |
| 2000 | Mercury Mountaineer | 5.0L V8 | Fits AWD; w/ Borg Warner 4404 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case or AWD; w/ Borg Warner 4405 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case |
| 2001 | Mercury Mountaineer | 5.0L V8 | Fits AWD; w/ Borg Warner 4404 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case or AWD; w/ Borg Warner 4405 Transfer Case; w/ Full Time 4WD; w/ 2 Speed Transfer Case |
Always replace transfer case shift shaft seal components in matched sets where applicable, torque fasteners to factory spec, and inspect adjacent drivetrain components for wear during installation. If you're not sure which variant matches your VIN, send us the last 8 digits of the VIN before checkout and we will confirm fitment.
Is NS330385 a direct replacement?
Yes — BCA NS330385 is built to OEM form/fit/function for the Mercury Mountaineer 5.0L V8 (1997-2001).
Do you ship to my state?
We ship to all 50 USA states. Tracking is provided.
What's the difference between Economy, Standard Replacement and Heavy Duty?
Economy is the value-priced option for everyday driving; Standard Replacement matches OEM spec; Heavy Duty uses upgraded materials for towing, fleet and severe service.
How can I confirm fitment?
Match year, make, model and engine (1997-2001 Mercury Mountaineer 5.0L V8). When in doubt, send your VIN — we verify before dispatch.
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Note: The product image is for illustrative purposes only. Actual product may vary slightly in appearance, packaging, or labeling. Fitment and specifications are guaranteed to OEM standards.