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The short version
- 2001-2005 IS300 front: hub 513150 with seal 224820, catalog verified, a bolt-on job.
- 2001-2005 IS300 rear: pressed bearing 511028, shared with GS and SC models of the era.
- The 2006-2008 IS250/IS350 replaced this with handed front hubs, HA590137 right and HA590138 left.
- Hard-driven cars chew the IS300 wheel bearing at the rear faster than mileage alone would suggest.
Track days and tight canyon roads put a different kind of load on a chassis than a commute does, and this car saw plenty of both. Owners who bought the IS300 to drive it hard also tend to be the ones replacing bearings early. That pattern shows up in the rear far more than the front.
Bolt-on front, press-in rear
The front hub, 513150, bolts on and carries its own seal, 224820. Both numbers are catalog verified for the 2001-2005 IS300.
The rear is a pressed bearing, 511028, the same part used in the GS and SC models built alongside the IS300 at the time.
IS300 wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2001-2005 IS300 | Front hub, bolt-on | 513150 check price |
| 2001-2005 IS300 | Front seal | 224820 check price |
| 2001-2005 IS300 | Rear bearing, pressed | 511028 check price |
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 carry these numbers over to the second-generation car. The 2006-2008 IS250 and IS350 moved to handed front hubs, HA590137 on the right and HA590138 on the left, a different design entirely.
Rear bearings on those later cars are listed as 512337 for the IS250 AWD and IS350, but variations exist. Match by VIN on the 2006-2008 generation rather than assuming a single number.
What the rear bearing shares
The IS300’s rear bearing, 511028, is not exclusive to this car. It is the same pressed unit found in the GS300 and the SC coupes built on related Toyota platforms during the same years.
That overlap keeps the part affordable and easy to find. It is a press job either way, so plan for shop time rather than a driveway swap.
Why this car eats rear bearings
The IS300 earned a reputation as an affordable rear-wheel-drive platform for drivers who like to push a car sideways. That style of driving loads the rear bearings with repeated cornering force well beyond what normal commuting produces.
Hard-driven examples show noise in turns long before the odometer would suggest a problem. Pothole hits from track curbs and aggressive parking lots add to that wear over time.
Diagnosing an IS300 wheel bearing
- Listen during hard cornering first. A worn IS300 wheel bearing often announces itself as a groan or roar that peaks mid-turn, not at speed.
- Jack the rear corner and check for play. Grab the tire at 12 and 6 o’clock and rock it firmly.
- Spin the wheel by hand. Grinding or notchy rotation points to a pitted bearing race, front or rear.
- Compare left and right sides. A single bad corner usually sounds louder when you weave toward the healthy side.
- Run through a full check before ordering parts. A quick wheel bearing check confirms it is not a tire or CV joint issue instead.
Common questions
What is the front IS300 wheel bearing part number?
513150 for the hub, paired with seal 224820. Both are catalog verified for the 2001-2005 IS300.
Does the IS300 rear bearing interchange with other Lexus models?
Yes. Part 511028 is shared with the GS and SC models built during the same era.
Can I use IS250 or IS350 front hubs on an IS300?
No. The IS300 uses a different bolt-on hub, 513150, while the later cars use handed HA590137 and HA590138 hubs.
Why does the IS300 wheel bearing wear out faster at the rear?
Hard cornering loads the rear bearings more than normal driving does. Cars driven aggressively tend to need rear replacement well before the front.
Is the IS300 front hub a bolt-on part?
Yes. Unlike the rear, which is pressed, the front hub bolts directly onto the spindle.