Audi S4 bearing, hub & seal reference — page 2
Look up 45 BCA catalogue entries for Audi S4. 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 45 reference entries for Audi S4. 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
26–45 of 45“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 |
|---|---|---|---|---|
| NBM88010BCA catalogue reference | Differential | 2004–2006Subject to the conditions in this row | Pinion Race - Rear Outer
| 2021 catalogue Page 21Entry aaa18bed |
| NBM88048BCA catalogue reference | Differential | 2000–2002Subject to the conditions in this row | Pinion Bearing - Rear Outer
| 2021 catalogue Page 21Entry 9c2a6f97 |
| NBM88048BCA catalogue reference | Differential | 2004–2006Subject to the conditions in this row | Pinion Bearing - Rear Outer
| 2021 catalogue Page 21Entry c4d9bd99 |
| NS224200BCA catalogue reference | Engine | 2010–2016Subject to the conditions in this row | Camshaft Seal - 3.0L 2995cc 183cid V6
| 2021 catalogue Page 23Entry c6b52c2c |
| NS3476BCA catalogue reference | Engine | 2000–2002Subject to the conditions in this row | Camshaft Seal - 2.7L 2671cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry d801420d |
| NS710618BCA catalogue reference | Engine | 2000–2002Subject to the conditions in this row | Crankshaft Seal - Front - 2.7L 2671cc V6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry 2c6e861a |
| NS99215BCA catalogue reference | Engine | 2004–2009Subject to the conditions in this row | Crankshaft Repair Sleeve - FrontNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 22Entry 5f175c76 |
| NBA35BCA catalogue reference | Manual Transmission | 2000–2002Subject 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 a9e2e5ba |
| NBA35BCA catalogue reference | Manual Transmission | 2005–2012Subject to the conditions in this row | Differential Bearing - AWD; Manual Trans.; 6 Speed Trans
| 2021 catalogue Page 25Entry a8a9ad95 |
| NBLM300811BCA catalogue reference | Manual Transmission | 2000–2002Subject to the conditions in this row | Differential Race - Manual Trans.; 6 Speed Trans
| 2021 catalogue Page 24Entry 07b34118 |
| NBLM300849BCA catalogue reference | Manual Transmission | 2000–2002Subject to the conditions in this row | Differential Bearing - Right - 01E Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 24Entry 0700688c |
| NBLM503310BCA catalogue reference | Manual Transmission | 2005–2012Subject to the conditions in this row | Differential Race - AWD; Manual Trans.; 6 Speed Trans
| 2021 catalogue Page 25Entry b95e5d12 |
| NBLM503349ABCA catalogue reference | Manual Transmission | 2005–2012Subject to the conditions in this row | Differential Bearing - AWD; Manual Trans.; 6 Speed Trans
| 2021 catalogue Page 25Entry 94392c4a |
| NS222540BCA catalogue reference | Manual Transmission | 2000–2002Subject to the conditions in this row | Input Shaft Seal - 01E Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 24Entry c082ef8b |
| NS99177BCA catalogue reference | Manual Transmission | 2000–2002Subject to the conditions in this row | Output Shaft Repair Sleeve - 01E Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 24Entry d8ab388d |
| WE60683BCA catalogue reference | Wheel-Front | 2010–2015Subject to the conditions in this row | Bearing Assembly
| 2021 catalogue Page 27Entry 61444826 |
| WE60997BCA catalogue reference | Wheel-Front | 2000–2002Subject to the conditions in this row | BearingNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 26Entry d1885328 |
| WE60636BCA catalogue reference | Wheel-Rear | 2000–2002Subject to the conditions in this row | BearingNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 28Entry e5cead80 |
| WE60673BCA catalogue reference | Wheel-Rear | 2004–2009Subject to the conditions in this row | Bearing Kit
| 2021 catalogue Page 28Entry 03fbd472 |
| WE60683BCA catalogue reference | Wheel-Rear | 2010–2015Subject to the conditions in this row | Bearing Assembly
| 2021 catalogue Page 28Entry 77a68156 |
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.