2003 Mercury Mountaineer bearing, hub & seal reference — page 2
Look up 46 BCA catalogue entries for 2003 Mercury Mountaineer. Compare full part references, component roles and recorded restrictions; confirm current vehicle-specific requirements before use.
Filter by vehicle and component
What this lookup establishes—and what it does not
Source: BCA 2021 Wheel Hub Assembly, Bearing and Seal Catalog. The loaded entries cover listed model years from 1995 through 2020. This is a historical catalogue reference, not a live VIN decoder or a guarantee for every trim, market or production date.
BCA is an NTN-owned product line. The numbers below remain BCA part references; they are not silently converted into NTN, SKF or another brand's part numbers. Confirm current OEM/service requirements before use.
Which bearing or hub reference applies?
The catalogue contains 46 reference entries for 2003 Mercury Mountaineer. Select the year and component, then read the full condition and footnote fields. There is no single universal bearing number for every support in this vehicle.
Reference records
26–46 of 46“Bearing”, “hub assembly”, “seal” and “repair sleeve” describe different components. The source description, rather than the catalogue title, determines the role of each number.
On a phone, each record is shown as a complete card with its restrictions. These records do not supply tightening torques or certify a replacement.
| BCA part reference | Component / position | Source model years | Recorded conditions & restrictions | Source trace |
|---|---|---|---|---|
| NS3909BCA catalogue reference | Engine | 2002–2010Subject to the conditions in this row | Crankshaft Seal - Rear - 4.6L 281cid V8
| 2021 catalogue Page 461Entry 203790e9 |
| NS473560NBCA catalogue reference | Engine | 1998–2003Subject to the conditions in this row | Crankshaft Seal - Front - 4.0L 245cid V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 461Entry 71d2df1b |
| NS482041NBCA catalogue reference | Engine | 2002–2010Subject to the conditions in this row | Crankshaft Seal - Front - 4.6L 281cid V8No additional numbered footnote is attached to this source row. | 2021 catalogue Page 461Entry e05236a9 |
| NS5277BCA catalogue reference | Engine | 2002–2010Subject to the conditions in this row | Crankshaft Seal - Rear - 4.6L 281cid V8
| 2021 catalogue Page 461Entry 6eb4098f |
| NS99166BCA catalogue reference | Engine | 1998–2003Subject to the conditions in this row | Crankshaft Repair Sleeve - Front - 4.0L 245cid V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 461Entry 554772c2 |
| NS99363BCA catalogue reference | Engine | 2002–2010Subject to the conditions in this row | Crankshaft Repair Sleeve - Rear - 4.6L 281cid V8No additional numbered footnote is attached to this source row. | 2021 catalogue Page 461Entry f76fec5b |
| NB206BCA catalogue reference | Transfer Case | 1997–2009Subject to the conditions in this row | Output Shaft Bearing - Front Inner
| 2021 catalogue Page 463Entry 0d7dfed8 |
| NB206BCA catalogue reference | Transfer Case | 2002–2004Subject to the conditions in this row | Output Shaft Bearing - Front
| 2021 catalogue Page 462Entry b575f2a5 |
| NB206BCA catalogue reference | Transfer Case | 2002–2005Subject to the conditions in this row | Output Shaft Bearing - Front Outer
| 2021 catalogue Page 463Entry 89f80c5d |
| NB208SLBCA catalogue reference | Transfer Case | 2002–2004Subject to the conditions in this row | Output Shaft Bearing - Rear Outer
| 2021 catalogue Page 462Entry 65b28aa3 |
| NB306BCA catalogue reference | Transfer Case | 2002–2003Subject to the conditions in this row | Output Shaft Bearing - Front Inner - 4WD
| 2021 catalogue Page 462Entry d34a989b |
| NB306BCA catalogue reference | Transfer Case | 2002–2005Subject to the conditions in this row | Output Shaft Bearing - Front Inner - AWD
| 2021 catalogue Page 463Entry eb251e5d |
| NB306BCA catalogue reference | Transfer Case | 2002–2010Subject to the conditions in this row | Output Shaft Bearing - Rear
| 2021 catalogue Page 463Entry 70fa45ff |
| NB306BCA catalogue reference | Transfer Case | 2002–2003Subject to the conditions in this row | Output Shaft Bearing - Rear - 4WD
| 2021 catalogue Page 462Entry 6a4cee6a |
| NB306BCA catalogue reference | Transfer Case | 2002–2005Subject to the conditions in this row | Output Shaft Bearing - Rear - AWD
| 2021 catalogue Page 463Entry da05b2d3 |
| NS710403BCA catalogue reference | Transfer Case | 2002–2003Subject to the conditions in this row | Input Shaft Seal - 4WD
| 2021 catalogue Page 462Entry 43b1c455 |
| NS710403BCA catalogue reference | Transfer Case | 2002–2003Subject to the conditions in this row | Input Shaft Seal - 4WD
| 2021 catalogue Page 462Entry 81dd92c6 |
| NS710403BCA catalogue reference | Transfer Case | 2002–2004Subject to the conditions in this row | Input Shaft Seal - AWD
| 2021 catalogue Page 462Entry 6c348699 |
| NS710403BCA catalogue reference | Transfer Case | 2002–2005Subject to the conditions in this row | Input Shaft Seal - AWD
| 2021 catalogue Page 463Entry d1d12763 |
| WE60726BCA catalogue reference | Wheel-Front | 2002–2005Subject to the conditions in this row | Bearing and Hub AssemblyNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 463Entry bfc663be |
| WE61585BCA catalogue reference | Wheel-Rear | 2002–2010Subject to the conditions in this row | Hub Repair KitNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 464Entry 0d417bab |
Checks before treating a reference as a replacement
Identify the complete vehicle
Match model year, engine, transmission, driven axle, body and production/VIN limits. A year and model name alone may leave several valid-looking entries.
Match the component role
Distinguish a loose bearing, complete hub, cup/cone, seal and repair sleeve. Check front/rear and inner/outer or left/right position exactly as recorded.
Preserve vehicle-specific interfaces
Confirm encoder/ABS arrangement, flange and spline interfaces, retention and the current service procedure. Do not transfer torque or installation force from an unrelated part.
How to use these results
Does a listed number guarantee fitment for my VIN?
No. These are source-listed catalogue references. Read every restriction and verify the current OEM and manufacturer information for the exact vehicle configuration. Missing VIN or production details remain unknown.
Can I replace a hub using a bearing with the same dimensions?
Not on dimensions alone. The complete assembly, encoder, retention, loading and installation interfaces must agree. The main bearing catalogue and cross-brand comparisons are separate dimensional references, not vehicle approvals.
Where are the axle-nut torque and installation instructions?
This application catalogue does not establish a universal torque or a complete installation sequence. Use the current vehicle-specific service procedure, including fastener reuse rules and staged tightening. Do not infer torque from the bearing number.
Does wheel noise prove that one of these parts has failed?
No. Bearing damage, tyres, brakes and driveline faults can produce overlapping symptoms. A reference lookup identifies candidates; it does not diagnose the cause or prove which side has failed.
Look up an exact source part number
Keep the BCA prefix and full marking. Similar numbers from other manufacturers are not automatically cross-references.
Continue the technical investigation
Source and interpretation limits
Factual reference basis: BCA 2021 Wheel Hub Assembly, Bearing and Seal Catalog, published by BCA Bearings, an NTN product line, with its linked numbered footnote reference. Each row retains its source page and restrictions. Vehicle names shared by one source entry remain associated with that entry; source counts are not quantities for sale.
BearingScope provides independently organized technical lookup and interpretation. It does not sell these parts, provide a repair service, certify current fitment, or claim that an absent result is unavailable from a manufacturer. Original public catalogue files and source fingerprints are retained in the site's verification records.