2001 Chevrolet Silverado 2500 HD Automatic & manual transmission bearing reference
Look up 17 BCA catalogue entries for 2001 Chevrolet Silverado 2500 HD — Automatic & manual transmission. 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 17 reference entries for 2001 Chevrolet Silverado 2500 HD in Automatic & manual transmission. 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
1–17 of 17“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 |
|---|---|---|---|---|
| NS2457BCA catalogue reference | Automatic Transmission | 2001–2006Subject to the conditions in this row | Extension Housing Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed Trans
| 2021 catalogue Page 73Entry 323b12f2 |
| NS4333NBCA catalogue reference | Automatic Transmission | 2001–2006Subject to the conditions in this row | Extension Housing Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed Trans
| 2021 catalogue Page 73Entry a4963f14 |
| NS710623BCA catalogue reference | Automatic Transmission | 2001–2003Subject to the conditions in this row | Oil Pump Seal - Front - 1000/M74 Trans.; Automatic Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 73Entry 67a4d3fd |
| NS8792SBCA catalogue reference | Automatic Transmission | 2001–2003Subject to the conditions in this row | Manual Shaft Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 73Entry ecb2d008 |
| NS8792SBCA catalogue reference | Automatic Transmission | 2001Subject to the conditions in this row | Shift Shaft Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 72Entry 896676a5 |
| NS9449BCA catalogue reference | Automatic Transmission | 2001–2003Subject to the conditions in this row | Extension Housing Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed Trans
| 2021 catalogue Page 73Entry 3b1719c1 |
| NB2520BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Race - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry e6b5e4fd |
| NB2580BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Bearing - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry ca773705 |
| NB28521BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Input Shaft Race - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry 37cfe99c |
| NB28580BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Input Shaft Bearing - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry 53728765 |
| NBA35BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Bearing - Rear - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry 9c5be5e2 |
| NBB5020BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Extension Housing Bearing - RWD; NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry 3fc04abe |
| NBLM102910BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Race - Front - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry bce7ec25 |
| NBLM102949BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Bearing - Front - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry e10f3d7c |
| NBM804010BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Output Shaft Race - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 110Entry 2011676d |
| NBM804049BCA catalogue reference | Manual Transmission | 2001–2002Subject to the conditions in this row | Output Shaft Bearing - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 109Entry 1ebc87bc |
| NS4638NBCA catalogue reference | Manual Transmission | 2001–2006Subject to the conditions in this row | Input Shaft Seal - Manual Trans.; 5 Speed Trans
| 2021 catalogue Page 110Entry 1720933c |
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.