2003 Mazda Miata bearing, hub & seal reference
Look up 28 BCA catalogue entries for 2003 Mazda Miata. 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 28 reference entries for 2003 Mazda Miata. 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
1–25 of 28“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 |
|---|---|---|---|---|
| NS221122BCA catalogue reference | Automatic Transmission | 1999–2003Subject to the conditions in this row | Manual Shaft Seal - 03-72LE Trans.; Automatic Trans.; 4 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 413Entry 801d1da3 |
| NS710319BCA catalogue reference | Automatic Transmission | 1999–2003Subject to the conditions in this row | Extension Housing Seal - 03-72LE TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 413Entry afc80d07 |
| NB32008BCA catalogue reference | Axle | 1999–2005Subject to the conditions in this row | Bearing - Rear
| 2021 catalogue Page 414Entry b632ecfd |
| NS710218BCA catalogue reference | Axle | 1999–2005Subject to the conditions in this row | Differential Seal - Rear
| 2021 catalogue Page 414Entry e55d62ae |
| NS99139BCA catalogue reference | Axle | 1999–2005Subject to the conditions in this row | Differential Repair Sleeve - Rear
| 2021 catalogue Page 414Entry 473c00f6 |
| NB202SSBCA catalogue reference | Clutch | 1999–2005Subject to the conditions in this row | Pilot BearingNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 415Entry 802b2afd |
| NB614120BCA catalogue reference | Clutch | 1999–2005Subject to the conditions in this row | Release Bearing
| 2021 catalogue Page 415Entry 0601f8a1 |
| NB32206BCA catalogue reference | Differential | 2003Subject to the conditions in this row | Pinion Bearing - Rear Outer
| 2021 catalogue Page 416Entry 5b9c25b8 |
| NB32307BCA catalogue reference | Differential | 1999–2005Subject to the conditions in this row | Pinion Bearing - Rear Inner
| 2021 catalogue Page 417Entry cc048fa9 |
| NS710727BCA catalogue reference | Differential | 1999–2005Subject to the conditions in this row | Pinion Seal - Rear Outer
| 2021 catalogue Page 417Entry 4ef0b5ed |
| NS99157BCA catalogue reference | Differential | 1999–2005Subject to the conditions in this row | Pinion Repair Sleeve - Rear Outer
| 2021 catalogue Page 417Entry 5d7131cb |
| NS223420BCA catalogue reference | Engine | 2000–2005Subject to the conditions in this row | Camshaft Seal - Right - 1.8L 1839cc L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 419Entry f22d4e0b |
| NS710355BCA catalogue reference | Engine | 1999–2005Subject to the conditions in this row | Crankshaft Seal - Front - 1.8L 1839cc L4No additional numbered footnote is attached to this source row. | 2021 catalogue Page 419Entry a8436137 |
| NS99134BCA catalogue reference | Engine | 1999–2005Subject to the conditions in this row | Camshaft Repair SleeveNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 419Entry 0f3d46fa |
| NS99145BCA catalogue reference | Engine | 1999–2005Subject to the conditions in this row | Crankshaft Repair Sleeve - FrontNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 419Entry 07052296 |
| NB205FFBCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Countershaft Bearing - Front - Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry 3026b30e |
| NB205FFBCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Countershaft Bearing - Front - Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry 8c3c1991 |
| NB205FFBCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Countershaft Bearing - Rear - Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry a37a060c |
| NB304BCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Countershaft Bearing - Rear - Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry 8f1c90f9 |
| NB305BCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Output Shaft Bearing - Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry 4118f650 |
| NB306BCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Input Shaft Bearing - Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry 690defea |
| NB306LBCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Intermediate Shaft Bearing - Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry 718eff9c |
| NS1990BCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Input Shaft Seal - Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry b2e8951f |
| NS223010BCA catalogue reference | Manual Transmission | 1999–2005Subject to the conditions in this row | Input Shaft Seal - Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 421Entry 970c589a |
| WE60540BCA catalogue reference | Wheel-Front | 1999–2005Subject to the conditions in this row | Bearing and Hub Assembly - 4-Wheel ABSNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 424Entry 4bc48874 |
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.