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The short version
- An Aztek wheel bearing lookup for 2003-2005 hinges on ABS, not drivetrain. ABS-equipped fronts and AWD (Versatrak) fronts both take 513187.
- A 2003-2005 non-ABS front wheel drive Aztek drops to a different number, 513203.
- Every 2001-2002 Aztek, regardless of trim, uses 513187 up front.
- The rear has no clean documented row for any year. Match the old part or confirm by VIN.
Pontiac aimed the Aztek at buyers who wanted crossover height with minivan bones underneath. The front bearing numbers reflect that mixed heritage more than most crossovers of the era.
Aztek wheel bearing numbers at a glance
For 2003-2005, the deciding factor on the Aztek wheel bearing front number is ABS, not drivetrain.
ABS-equipped cars and Versatrak AWD cars share the same 513187 number. A non-ABS front wheel drive Aztek takes 513203 instead.
Aztek wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2003-2005 | Front hub, ABS or AWD (Versatrak) | 513187 check price |
| 2003-2005 | Front hub, non-ABS, FWD | 513203 check price |
| 2001-2002 | Front hub, all trims | 513187 check price |
| 2001-2005 | Rear hub | match old part or VIN |
Every model year this chart resolves: 2001, 2002, 2003, 2004 and 2005.
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.
Do not shop the 2003-2005 Aztek wheel bearing by drivetrain alone. The front number that fits an AWD Versatrak car, 513187, is the same number an ABS-equipped front wheel drive car needs.
Only a non-ABS front wheel drive Aztek from those years drops to 513203. Check for ABS before ordering, since AWD and non-AWD trims are not the dividing line here.
Aztek wheel bearing family: U-body roots
The Aztek grew out of GM’s U-body minivan platform, the same underpinnings behind the Pontiac Montana. That shared origin explains why the front hub numbers land in the minivan’s range.
Pontiac replaced the Aztek in spirit with the Pontiac Torrent. The Torrent is a different platform with its own separate bearing rows. The Pontiac lineup page covers both.
Rear axle: match the old part
No clean rear row exists for the Aztek in any year of its run. That leaves matching the part pulled off the car, or confirming a fit by VIN, as the reliable path.
Guessing a rear number from a similar GM crossover is not a safe substitute. GM mixed rear hub designs across this platform family.
Diagnosing an Aztek wheel bearing
- Check for ABS before ordering a front part. That, not AWD, decides between 513187 and 513203 on 2003-2005 cars.
- Listen for a hum tied to road speed. A worn Aztek wheel bearing typically grows louder as the car speeds up.
- Note any change in a turn. Bearing noise commonly gets louder turning away from the worn side.
- Rock the wheel at twelve and six with it off the ground. Play at the hub points to bearing wear.
- Pull the old rear part before ordering a replacement. There is no clean catalog row to shop from directly.
The general routine is on the checking page.
Common questions
Does AWD change the Aztek wheel bearing number?
Not on its own. For 2003-2005, ABS is the deciding factor, and the catalogs put Versatrak AWD cars on the same 513187 number either way.
What front number does a non-ABS 2004 Aztek need?
513203, since it lacks the ABS that would put it in the 513187 row.
Is the 2001-2002 Aztek wheel bearing different from later years?
No. Every 2001-2002 Aztek, regardless of trim, uses the same 513187 front number.
What rear wheel bearing fits my Aztek?
There is no documented row for any year. Match the old part or confirm the fit by VIN.
Are Aztek parts shared with the Montana minivan?
The two share a platform family, which is why the front numbers fall in the same range. Each vehicle still has its own documented rows.