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The short version
- Front Alero wheel bearing hub is 513137, covering the full 1999-2004 run. Timken and National agree on the number.
- Rear hub is 512152, also 1999-2004, sourced from National’s catalog.
- The Alero shares its N-body platform with the Pontiac Grand Am. It uses the same front and rear numbers.
- The 1997-2004 Cutlass carries the same front hub, 513137, useful for cross-shopping parts.
Oldsmobile closed its doors in 2004, the same year the Alero went out of production. The hub bearings it used are still stocked under active part numbers, because the Alero shared its underpinnings with cars that outlived the brand.
Alero wheel bearing numbers at a glance
The Alero wheel bearing lineup covers the entire 1999-2004 run with just two numbers. That is 513137 up front and 512152 in back.
Timken and National list the same front number. That is not always true on GM N-body cars from this era.
Alero wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 1999-2004 | Front hub bearing | 513137 check price |
| 1999-2004 | Rear hub bearing | 512152 check price |
Every model year this chart resolves: 1999, 2000, 2001, 2002, 2003 and 2004.
Price links lead to Amazon searches for that number. As an Amazon Associate this site earns from qualifying purchases.
Lookups run through the cross reference page.
The front Alero wheel bearing number, 513137, is confirmed by both Timken and National. It carries less risk of a catalog mismatch than most parts on this site.
The rear number, 512152, only shows up in National’s listings. Match against the old part before ordering if a second source is not available.
Shared with the Grand Am and Cutlass
The Alero rode on GM’s N-body platform, the same architecture underneath the Pontiac Grand Am. The Grand Am uses the identical 513137 front hub, and its 2001 to 2005 rear also runs 512152. Only the earliest Grand Am rears break from the pattern, a detail its own page covers.
The 1997-2004 Cutlass, built alongside the Alero on the same line, takes the same front hub. Oldsmobile retired both nameplates as the brand wound down. That parts overlap keeps the Alero wheel bearing supply chain simple.
Where the Alero fits in the lineup
This page opens the Oldsmobile model lineup on the site, with the rest of the brand’s cars to follow. The Alero was the last new nameplate Oldsmobile launched before the brand wound down.
Its N-body twin lives under the Pontiac hub, since the Grand Am wore a different badge on the same GM architecture. A compact sedan like the Alero sees ordinary commuting loads, not towing or off road abuse. Bearings here typically fail from age and corrosion rather than overload.
Diagnosing an Alero wheel bearing
- Listen for a rhythmic hum. A worn Alero wheel bearing produces a growl or hum that rises and falls with road speed.
- Check for a change in a turn. Bearing noise typically gets louder turning away from the bad side and quieter turning toward it.
- Jack up the corner and check for play. With the wheel off the ground, grab it at 12 and 6 o’clock and rock it. Looseness points to hub wear.
- Spin the wheel by hand. Roughness, grinding, or clicking while spinning free points to a damaged bearing race.
- Rule out other causes before replacing. Worn tires and CV joint noise both mimic a bearing growl on this platform.
Common questions
What is the front Alero wheel bearing part number?
513137, covering the full 1999-2004 model run. Timken and National agree on this number.
What is the rear Alero wheel bearing part number?
512152, also spanning 1999-2004. It comes from National’s catalog, so match the old part if a second source is not available.
Does the Grand Am use the same wheel bearing?
Mostly. The Grand Am shares the N-body platform and the 513137 front hub, and its 2001 to 2005 rear matches the Alero’s 512152. A 1999 or 2000 Grand Am rear can differ, so check its own page first.
Will a Cutlass wheel bearing fit an Alero?
The 1997-2004 Cutlass front hub carries the same 513137 number. The front Alero wheel bearing interchanges with it, but the catalogs do not carry a Cutlass rear number here. Match that one by the old part.
Which catalog should be trusted for the rear bearing?
National is the only source currently carrying the Alero wheel bearing rear hub, part 512152. Absent a second source, matching against the old part removes any doubt.