Identify the vehicle. Retain the restrictions.

Hummer H1 bearing, hub & seal reference — page 3

Look up 78 BCA catalogue entries for Hummer H1. Compare full part references, component roles and recorded restrictions; confirm current vehicle-specific requirements before use.

Source-backed catalogue lookup

Filter by vehicle and component

Vehicle make Vehicle model Model year Component / position

Selections apply immediately. Every result retains the original year range, component position and additional restrictions. The button also works without JavaScript.

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.

Recorded application evidence

Which bearing or hub reference applies?

The catalogue contains 78 reference entries for Hummer H1. 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.

All wheel positions Front wheel Rear wheel Engine Transmission Differential

Choose a recorded model year

2006 2004 2003 2002

Reference records

51–75 of 78

“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
NS3946BCA catalogue reference	Transfer Case	2002–2004Subject to the conditions in this row	Output Shaft Seal - Front [49] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed	2021 catalogue Page 331Entry 400dddc2
NS3946BCA catalogue reference	Transfer Case	2006Subject to the conditions in this row	Output Shaft Seal - Front [49] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed	2021 catalogue Page 331Entry 5b6bf4c7
NS710663BCA catalogue reference	Transfer Case	2002–2004Subject to the conditions in this row	Output Shaft Seal - Rear [49] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed	2021 catalogue Page 331Entry 49ab6253
NS710663BCA catalogue reference	Transfer Case	2006Subject to the conditions in this row	Output Shaft Seal - Rear [49] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed	2021 catalogue Page 331Entry 38f3fe02
NS710928BCA catalogue reference	Transfer Case	2002–2004Subject to the conditions in this row	Input Shaft Seal [51] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed; Dual Lip	2021 catalogue Page 331Entry 9d1706b1
NS710928BCA catalogue reference	Transfer Case	2006Subject to the conditions in this row	Input Shaft Seal [51] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed; Dual Lip	2021 catalogue Page 331Entry f4b5ff25
NS99225BCA catalogue reference	Transfer Case	2002–2004Subject to the conditions in this row	Oil Pump Housing Repair Sleeve [49] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed	2021 catalogue Page 331Entry c0db0da1
NS99225BCA catalogue reference	Transfer Case	2006Subject to the conditions in this row	Oil Pump Housing Repair Sleeve [49] with New Process 242H Transfer Case; with Full Time 4WD; 2 Speed	2021 catalogue Page 331Entry 8751842d
WE61445BCA catalogue reference	Transfer Case	2002–2004Subject to the conditions in this row	Output Shaft Bearing - Front - 4WD [52] with New Process 242H Transfer Case; 2 Speed; Full Time 4WD	2021 catalogue Page 331Entry e43ce633
WE61445BCA catalogue reference	Transfer Case	2006Subject to the conditions in this row	Output Shaft Bearing - Front - 4WD [52] with New Process 242H Transfer Case; 2 Speed; Full Time 4WD	2021 catalogue Page 331Entry 301302ad
NB3420BCA catalogue reference	Wheel-Front Inner	2002–2004Subject to the conditions in this row	Bearing RaceNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 2a8f161b
NB3420BCA catalogue reference	Wheel-Front Inner	2006Subject to the conditions in this row	Bearing RaceNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry a0ca6542
NB3490BCA catalogue reference	Wheel-Front Inner	2002–2004Subject to the conditions in this row	BearingNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 1e0f0ef4
NB3490BCA catalogue reference	Wheel-Front Inner	2006Subject to the conditions in this row	BearingNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 16c570ff
NB3720BCA catalogue reference	Wheel-Front Outer	2002–2004Subject to the conditions in this row	Bearing RaceNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 67dec631
NB3720BCA catalogue reference	Wheel-Front Outer	2006Subject to the conditions in this row	Bearing RaceNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 80e3af59
NB3780BCA catalogue reference	Wheel-Front Outer	2002–2004Subject to the conditions in this row	BearingNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 8ac34bf1
NB3780BCA catalogue reference	Wheel-Front Outer	2006Subject to the conditions in this row	BearingNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 17701d07
NB3420BCA catalogue reference	Wheel-Rear Inner	2002–2004Subject to the conditions in this row	Bearing RaceNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 1efa45a6
NB3420BCA catalogue reference	Wheel-Rear Inner	2006Subject to the conditions in this row	Bearing RaceNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 9ba0ff71
NB3490BCA catalogue reference	Wheel-Rear Inner	2002–2004Subject to the conditions in this row	BearingNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry a6e93b0c
NB3490BCA catalogue reference	Wheel-Rear Inner	2006Subject to the conditions in this row	BearingNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 231f63e2
NS710585BCA catalogue reference	Wheel-Rear Inner	2002–2004Subject to the conditions in this row	SealNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry d8fbbd06
NS710585BCA catalogue reference	Wheel-Rear Inner	2006Subject to the conditions in this row	SealNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 48158bab
NB3720BCA catalogue reference	Wheel-Rear Outer	2002–2004Subject to the conditions in this row	Bearing RaceNo additional numbered footnote is attached to this source row.	2021 catalogue Page 332Entry 96cbd059

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

Wheel and hub identification checklist →Investigate wheel bearing noise →Engine and shell-bearing principles →Replacement evidence checklist →Query an actual bearing designation or dimension →

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.