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The short version
- Three fronts serve the Saturn Ion wheel bearing chart: 513204 with ABS, 513205 without, 513206 on the Red Line.
- Those are the exact numbers the Chevrolet Cobalt uses, because it is the same platform.
- Rears follow the same three-way logic: ordinary drum-brake cars split by ABS, the Red Line runs its own disc-brake hub.
- Commonly cited rears are 512248 without ABS and 512249 with it; match your build.
Saturn was winding down when the Ion arrived, but the parts situation is healthy for one reason: underneath, this is GM’s Delta platform, and the Cobalt keeps its numbers in every warehouse.
Three fronts, one question each
An ordinary Ion wheel bearing up front is 513204 with ABS or 513205 without, for 2003 to 2007.
The supercharged Red Line takes 513206, the five-stud performance hub.
Ion wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2003 to 2007 | Front, ABS | 513204 check price |
| 2003 to 2007 | Front, without ABS | 513205 check price |
| 2004 to 2007 | Front, Red Line | 513206 check price |
| 2003 to 2007 | Rear, without ABS, commonly cited | 512248 check price |
| 2003 to 2007 | Rear, ABS, commonly cited | 512249 check price |
| 2004 to 2007 | Rear, Red Line, disc brakes | own listing, match by trim |
Every model year this chart resolves: 2003, 2004, 2005, 2006 and 2007.
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 Cobalt connection pays
Every front number above also serves the Cobalt, whose parts pages run deeper and often cheaper than anything wearing the dead Saturn badge.
Shop by the number and let the badge fall away.
The sibling’s fussier full chart, including its stud-count logic, is on the Cobalt page. The make overview is on the Saturn page.
Watch the dashboard, not just the noise
On ABS cars the sensor lives in the hub, and these GM assemblies are known for tripping the ABS lamp as their first symptom. A wheel speed code plus a quiet car still points at the bearing.
That behavior is explained on the ABS light page.
Diagnosing an Ion wheel bearing
- Answer ABS and trim first, since both fork the number.
- Scan any ABS code for which wheel it names.
- Rock the wheel at twelve and six.
- Weave at speed to place a hum.
- Search Cobalt listings before paying Saturn prices.
The physical checks are on the checking page.
Common questions
Which Ion wheel bearing fits my front?
513204 with ABS, 513205 without, 513206 if it is a Red Line. All bolt-on hubs.
How do I know if my car has ABS?
Key on, watch for the amber ABS lamp in the bulb check, or look for the sensor wire at the hub.
Are Cobalt parts really identical?
The fronts, yes, number for number. Rears follow the same logic; match ABS and trim the same way.
What is different about the Red Line?
Five studs, rear discs and its own hubs at both ends, on top of the supercharger.
Can a bad hub turn on the ABS light?
Yes, and on this platform the light often beats the noise. Scan before replacing parts.
Do I need a press?
No. Every corner here is a bolt-on hub assembly.