Audi A4 Quattro bearing, hub & seal reference — page 2
Look up 80 BCA catalogue entries for Audi A4 Quattro. 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 80 reference entries for Audi A4 Quattro. 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
26–50 of 80“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 |
|---|---|---|---|---|
| NBF85265BCA catalogue reference | Clutch | 1997–2005Subject to the conditions in this row | Pilot Bearing - 1.8L 1781cc L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 20Entry 4e7916a6 |
| NBA35BCA catalogue reference | Differential | 1996–2003Subject to the conditions in this row | Bearing Set - Rear RightNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 21Entry d650c74e |
| NBBR52BCA catalogue reference | Differential | 1996–2004Subject to the conditions in this row | Pinion Bearing Set - Rear Outer
| 2021 catalogue Page 21Entry 932d799d |
| NBHM801310BCA catalogue reference | Differential | 1996–2004Subject to the conditions in this row | Pinion Race - Rear Inner
| 2021 catalogue Page 21Entry 0745128a |
| NBHM801346XBCA catalogue reference | Differential | 1996–2004Subject to the conditions in this row | Pinion Bearing - Rear Inner
| 2021 catalogue Page 21Entry 12e4a85a |
| NBM88010BCA catalogue reference | Differential | 1996–2004Subject to the conditions in this row | Pinion Race - Rear Outer
| 2021 catalogue Page 21Entry 8e52b6b1 |
| NBM88048BCA catalogue reference | Differential | 1996–2004Subject to the conditions in this row | Pinion Bearing - Rear Outer
| 2021 catalogue Page 21Entry 8e7e4da4 |
| NS1108BCA catalogue reference | Engine | 1996–1997Subject to the conditions in this row | Crankshaft Seal - Front - 2.8L 2771cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry af90e13f |
| NS224200BCA catalogue reference | Engine | 2002–2006Subject to the conditions in this row | Camshaft Seal - 3.0L 2976cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry ba7ad708 |
| NS3476BCA catalogue reference | Engine | 1996–2001Subject to the conditions in this row | Camshaft Seal - 2.8L 2771cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry cc01aa31 |
| NS3476BCA catalogue reference | Engine | 1997–1999Subject to the conditions in this row | Camshaft Seal - 1.8L 1781cc L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry 0e353ac5 |
| NS3476BCA catalogue reference | Engine | 2000Subject to the conditions in this row | Camshaft Seal - 1.8L 1781cc L4
| 2021 catalogue Page 22Entry b4bc6242 |
| NS3476BCA catalogue reference | Engine | 2001–2005Subject to the conditions in this row | Camshaft Seal - 1.8L 1781cc L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry 829d2c00 |
| NS710618BCA catalogue reference | Engine | 1997–2000Subject to the conditions in this row | Crankshaft Seal - Front - 1.8L 1781cc L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry 4b0a090c |
| NS710618BCA catalogue reference | Engine | 1998–1999Subject to the conditions in this row | Crankshaft Seal - Front - 2.8L 2771cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry c341b131 |
| NS710618BCA catalogue reference | Engine | 2001Subject to the conditions in this row | Crankshaft Seal - Front - 1.8L 1781cc L4
| 2021 catalogue Page 22Entry 8c1df605 |
| NS710618BCA catalogue reference | Engine | 2002–2005Subject to the conditions in this row | Crankshaft Seal - Front - 1.8L 1781cc L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry 150204a8 |
| NS710618BCA catalogue reference | Engine | 2002–2006Subject to the conditions in this row | Crankshaft Seal - Front - 3.0L 2976cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry fec0ff7b |
| NS710618BCA catalogue reference | Engine | 2005–2007Subject to the conditions in this row | Crankshaft Seal - Front - 2.0L 1984cc 121cid L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry 40fb2c44 |
| NS710618BCA catalogue reference | Engine | 2010–2011Subject to the conditions in this row | Crankshaft Seal - Front - 3.2L 3197cc 195cid V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 23Entry d6d34b8c |
| NS99166BCA catalogue reference | Engine | 2002–2003Subject to the conditions in this row | Camshaft Repair Sleeve - 3.0L 2976cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry fd94c887 |
| NBA35BCA catalogue reference | Manual Transmission | 1996–2003Subject to the conditions in this row | Differential Bearing - Left - 01A Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 24Entry 5fef2ce8 |
| NBA35BCA catalogue reference | Manual Transmission | 1996–2003Subject to the conditions in this row | Differential Bearing and Race Set - 01A Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 24Entry 4c70bc5c |
| NBA35BCA catalogue reference | Manual Transmission | 2002Subject to the conditions in this row | Differential Bearing - Left - 01E Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 24Entry 123bfc6f |
| NBA35BCA catalogue reference | Manual Transmission | 2003Subject to the conditions in this row | Differential Bearing - Left - 01E Trans.; Manual Trans.; 6 Speed Trans
| 2021 catalogue Page 24Entry 259acdf3 |
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.