BCA NS4278 — vehicle application reference
Inspect 37 source-listed vehicle applications for BCA NS4278, with the original year ranges, component positions and restrictions. Historical catalogue evidence is not current VIN fitment approval.
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.
Where this exact BCA reference is listed
BCA NS4278 appears in 37 source application entries below. Different entries can have different vehicles, positions and restrictions. A shared part reference does not make every bearing in the vehicle interchangeable.
Reference records
1–25 of 37“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 |
|---|---|---|---|---|
| NS4278BCA catalogue reference | Differential | 2003–2011Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 212Entry b32d8cef |
| NS4278BCA catalogue reference | Differential | 2003–2005Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 211Entry b2e45543 |
| NS4278BCA catalogue reference | Differential | 2001–2002Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 209Entry 7b7a3ce7 |
| NS4278BCA catalogue reference | Differential | 1999Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 207Entry d73b6451 |
| NS4278BCA catalogue reference | Differential | 2000Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 208Entry 458aa465 |
| NS4278BCA catalogue reference | Differential | 2003–2005Subject to the conditions in this row | Pinion Seal - Rear
| 2021 catalogue Page 211Entry 8a7c43b0 |
| NS4278BCA catalogue reference | Differential | 2007–2008Subject to the conditions in this row | Pinion Seal - RearNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 212Entry d25c66e2 |
| NS4278BCA catalogue reference | Differential | 1998–2002Subject to the conditions in this row | Pinion Seal - RearNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 208Entry ad6aaf88 |
| NS4278BCA catalogue reference | Differential | 2003–2005Subject to the conditions in this row | Pinion Seal - RearNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 211Entry ce8abcfa |
| NS4278BCA catalogue reference | Differential | 1995–1998Subject to the conditions in this row | Pinion Seal - Rear
| 2021 catalogue Page 206Entry 446fd5a5 |
| NS4278BCA catalogue reference | Differential | 1995–2002Subject to the conditions in this row | Pinion Seal - Rear
| 2021 catalogue Page 208Entry be716f50 |
| NS4278BCA catalogue reference | Differential | 2004–2005Subject to the conditions in this row | Pinion Seal - RearNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 211Entry fe4e2fb8 |
| NS4278BCA catalogue reference | Differential | 2007–2010Subject to the conditions in this row | Pinion Seal - RearNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 212Entry f90a2fe2 |
| NS4278BCA catalogue reference | Differential | 2000Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 208Entry 2f75bb58 |
| NS4278BCA catalogue reference | Differential | 2001–2005Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 211Entry d435802c |
| NS4278BCA catalogue reference | Differential | 2001Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 208Entry 3d17b06e |
| NS4278BCA catalogue reference | Differential | 2002–2016Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 213Entry 9ed360a9 |
| NS4278BCA catalogue reference | Differential | 1995–1997Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 206Entry aa4bd867 |
| NS4278BCA catalogue reference | Differential | 2001–2016Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 213Entry 37744e8a |
| NS4278BCA catalogue reference | Differential | 2004Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 210Entry 6fb1717c |
| NS4278BCA catalogue reference | Differential | 1995–1997Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 206Entry af9aeee0 |
| NS4278BCA catalogue reference | Differential | 1998–1999Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 207Entry a1f4bd8d |
| NS4278BCA catalogue reference | Differential | 1999–2000Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 208Entry e053a310 |
| NS4278BCA catalogue reference | Differential | 2001–2016Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 213Entry c313f5cb |
| NS4278BCA catalogue reference | Differential | 1995–1997Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 206Entry d0246efa |
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.