1998 BMW 323i bearing, hub & seal reference
Look up 20 BCA catalogue entries for 1998 BMW 323i. 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 20 reference entries for 1998 BMW 323i. 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
1–20 of 20“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 |
|---|---|---|---|---|
| NS6712NABCA catalogue reference | Automatic Transmission | 1998–1999Subject to the conditions in this row | Oil Pump Seal - Front - 4L30-E Trans.; Automatic Trans.; 4 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 32Entry 050fc1e2 |
| NBLM503310BCA catalogue reference | Axle | 1998–2000Subject to the conditions in this row | Differential Bearing Race - Rear
| 2021 catalogue Page 35Entry 6d5a2efe |
| NBLM503349ABCA catalogue reference | Axle | 1998–2000Subject to the conditions in this row | Bearing - Rear
| 2021 catalogue Page 35Entry 478a5f89 |
| NS473823BCA catalogue reference | Axle | 1998–2000Subject to the conditions in this row | Differential Seal - Rear
| 2021 catalogue Page 35Entry 411d4ac4 |
| NS99139BCA catalogue reference | Axle | 1998–2000Subject to the conditions in this row | Differential Repair Sleeve - Rear
| 2021 catalogue Page 35Entry 1d01dc1c |
| NB102CCBCA catalogue reference | Clutch | 1998–2000Subject to the conditions in this row | Pilot BearingNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 36Entry 506e34ce |
| NBA35BCA catalogue reference | Differential | 1998Subject to the conditions in this row | Bearing Set - RearNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 37Entry 94ddafe2 |
| NBHM88510BCA catalogue reference | Differential | 1998–2000Subject to the conditions in this row | Pinion Race - Rear Outer
| 2021 catalogue Page 38Entry 123d5fb9 |
| NBHM88542BCA catalogue reference | Differential | 1998–2000Subject to the conditions in this row | Pinion Bearing - Rear Outer
| 2021 catalogue Page 38Entry 402a0e56 |
| NBHM89410BCA catalogue reference | Differential | 1998–2000Subject to the conditions in this row | Pinion Race - Rear Inner
| 2021 catalogue Page 38Entry 948a9750 |
| NBHM89449BCA catalogue reference | Differential | 1998–2000Subject to the conditions in this row | Pinion Bearing - Rear Inner
| 2021 catalogue Page 38Entry 6b72c67e |
| NB106CCBCA catalogue reference | Drive Shaft | 1998–2000Subject to the conditions in this row | Center Support Bearing
| 2021 catalogue Page 40Entry 2fa9b554 |
| NBHB278020BCA catalogue reference | Drive Shaft | 1998–2000Subject to the conditions in this row | Center Support Bearing
| 2021 catalogue Page 40Entry c823d385 |
| NS223802BCA catalogue reference | Engine | 1998–2000Subject to the conditions in this row | Auxiliary Shaft Seal - 2.5L 2494cc 152cid L6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 42Entry 637a4ce5 |
| NS229005BCA catalogue reference | Engine | 1998–2000Subject to the conditions in this row | Crankshaft Seal - Rear - 2.5L 2494cc 152cid L6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 42Entry 23f84185 |
| NS99189BCA catalogue reference | Engine | 1998–2000Subject to the conditions in this row | Crankshaft Repair Sleeve - Front - 2.5L 2494cc 152cid L6No additional numbered footnote is attached to this source row. | 2021 catalogue Page 42Entry b85d6179 |
| NS99353BCA catalogue reference | Engine | 1998–2000Subject to the conditions in this row | Crankshaft Repair Sleeve - RearNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 42Entry 4a5b51c3 |
| NS223050BCA catalogue reference | Manual Transmission | 1998–2000Subject to the conditions in this row | Input Shaft Seal - 250 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 46Entry 6b86b350 |
| WE60769BCA catalogue reference | Wheel-Front | 1998–2000Subject to the conditions in this row | Bearing and Hub AssemblyNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 48Entry 64e306b8 |
| WE60797BCA catalogue reference | Wheel-Rear | 1998–2000Subject to the conditions in this row | BearingNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 50Entry 5c28f5d0 |
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.