NATIONAL STANDARD REPLACEMENT TRANSFER CASE OUTPUT SHAFT REPAIR SLEEVE TO SUIT MERCURY Mountaineer 5.0L V8 (1997-2001)
NATIONAL STANDARD REPLACEMENT TRANSFER CASE OUTPUT SHAFT REPAIR SLEEVE TO SUIT MERCURY Mountaineer 5.0L V8 (1997-2001)

NATIONAL STANDARD REPLACEMENT TRANSFER CASE OUTPUT SHAFT REPAIR SLEEVE TO SUIT MERCURY Mountaineer 5.0L V8 (1997-2001)

$21.49

Brand: NATIONAL
Availability: In Stock

NATIONAL Standard Replacement Transfer Case Output Shaft Repair Sleeve — 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. Why this transfer case output shaft repair sleeve fits your Mercury Mountaineer Engineered by NATIONAL as a...

$21.49

NATIONAL Standard Replacement Transfer Case Output Shaft Repair Sleeve — 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.

Why this transfer case output shaft repair sleeve fits your Mercury Mountaineer

Engineered by NATIONAL as a standard replacement grade transfer case output shaft repair sleeve for the 5.0L V8 engine, this 99166 matches factory mounting points and form factor so install requires no modification. Fits Rear; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; 4WD or AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed Standard replacement spec — the same dimensions, materials and performance envelope as the original factory part.

Replaces these OEM & cross-reference numbers

Search by any number below — they all match NATIONAL 99166:

  • SKF: 99166

Fitment

Year Make / Model Engine Notes
1997 Mercury Mountaineer 5.0L V8 Fits Rear; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; 4WD or AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed
1998 Mercury Mountaineer 5.0L V8 Fits Rear; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; 4WD or AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed
1999 Mercury Mountaineer 5.0L V8 Fits Rear; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; 4WD or AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed
2000 Mercury Mountaineer 5.0L V8 Fits Rear; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; 4WD or AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed
2001 Mercury Mountaineer 5.0L V8 Fits Rear; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; 4WD or AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed

Specifications

  • Brand: NATIONAL
  • Quality tier: Standard Replacement
  • Part number / SKU: 99166
  • Category: Drivetrain > Transfer Case Output Shaft Repair Sleeve
  • Fits: Mercury Mountaineer 5.0L V8 1997-2001
  • Notes: Fits Rear; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; 4WD or AWD; w/ Borg-Warner 4404 Transfer Case; w/o Boot; 2 Speed or Rear; AWD; w/ Borg-Warner 4405 Transfer Case; 2 Speed or Front; 4WD or AWD; w/ Borg-Warner 4403 Transfer Case; 2 Speed
  • Shipping: Ships to USA (lower 48 + AK + HI)

Installation tips

Always replace transfer case output shaft repair sleeve 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.

Related parts for your Mercury Mountaineer

FAQ

Is 99166 a direct replacement?
Yes — NATIONAL 99166 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.

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