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The short version
- A Sienna wheel bearing search now covers every year from 2000 through 2016. That includes the front and the rear.
- At the rear, 512456 covers front wheel drive. 512482 covers all wheel drive on the 2011 to 2018 vans. 512280 and 512281 cover the same split on 2007 to 2010 vans.
- The all wheel drive vans are the interesting ones. They came on run flat tires with no spare.
- The front splits by component from 2004 onward. An outer bearing is shared by both drivetrains, but the inner bearing and hub assembly is not.
A Sienna wheel bearing question spans nearly two decades. Coverage on this page runs from the first generation in 2000 through the third generation cars built in 2016.
For years this was the only minivan on sale with all wheel drive. That decision had a knock on effect nobody markets.
The driveshaft runs through where the spare wheel would sit. Toyota deleted the spare and fitted run flats instead, and every all wheel drive Sienna since has shipped that way.
The drivetrain split
On 2011 to 2018 vans, 512456 is cited for front wheel drive and 512482 for all wheel drive.
On 2007 to 2010 vans the pair is 512280 and 512281 the same way.
Earlier vans split the same way too. The catalogs only document that split cleanly from 2004 onward, filling a small gap between the two generations above.
A 2004 to 2006 van uses the same two numbers as the 2007 to 2010 van. The catalog simply prints the years differently across sources.
The front splits by component, not just drivetrain
From 2004 onward the front hub is two parts. An outer bearing is shared by both drivetrains, paired with an inner bearing and hub assembly.
The inner part does depend on drivetrain. Earlier vans, 1998 to 2003, use a single ball bearing at the front instead.
Confirm the drivetrain before ordering the inner assembly. Order the outer bearing alongside it rather than assuming one part covers the job.
A listing that shows only one number for a post 2004 van is incomplete. Ask what the second part is before paying for labor twice.
The 1998 to 2003 van is simpler at the front by comparison. One ball bearing number covers it regardless of drivetrain, paired with a separate hub repair kit.
Sienna wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2011 to 2020 | Front, outer component, BCA numbering | WE60774 check price |
| 2011 to 2020 | Front inner, all wheel drive, BCA numbering | WE61346 check price |
| 2011 to 2020 | Front inner, front wheel drive, BCA numbering | WE60957 check price |
| 2011 to 2018 | Rear, all wheel drive | 512482 check price |
| 2011 to 2018 | Rear, front wheel drive | 512456 check price |
| 2007 to 2010 | Rear, all wheel drive | 512281 check price |
| 2007 to 2010 | Rear, front wheel drive | 512280 check price |
| 2004 to 2010 | Front, outer component, BCA numbering | WE60691 check price |
| 2004 to 2010 | Front inner, all wheel drive, BCA numbering | WE61166 check price |
| 2004 to 2010 | Front inner, front wheel drive, BCA numbering | WE60770 check price |
| 2004 to 2009 | Front, parallel catalog numbering | 510063 check price |
| 2004 to 2006 | Rear, all wheel drive, parallel catalog numbering | 512281 check price |
| 2004 to 2006 | Rear, front wheel drive, parallel catalog numbering | 512280 check price |
| 1998 to 2003 | Front, parallel catalog numbering, bearing | 510006 check price |
| 1998 to 2003 | Front, parallel National numbering, hub repair kit | 518509 check price |
| 1998 to 2003 | Rear, parallel catalog numbering | 512041 check price |
| 1998 to 2002 | Rear, BCA numbering | WE61918 check price |
Every model year this chart resolves: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020.
WE60691 or WE60774 is the outer bearing depending on year, shared by both drivetrains. WE61166, WE60770, WE61346 or WE60957 is the inner bearing and hub assembly, and it does depend on drivetrain.
Ordering only the outer number leaves the job unfinished. Confirm the year and the drivetrain, then order the matching inner assembly alongside it.
Lookups run through the cross reference page.
What run flats do to a hub
An ordinary tire absorbs a pothole by deflecting. A run flat is built to carry the van with no air in it. It barely deflects at all.
The energy still has to go somewhere, and the hub is next in line.
This is a mechanism rather than a measured statistic, and the site presents it that way. It does fit the impact damage evidence.
A front wheel drive Sienna avoids the run flat question entirely. Most of those vans ride on an ordinary tire with a real spare underneath.
The tire matching problem
All wheel drive punishes mismatched tread depths. Run flats are expensive enough that owners replace one rather than a pair.
That saves money once, then makes the system work continuously. The hum it produces sounds exactly like a failing bearing.
Measure all four before condemning a hub. That is on the tire noise page.
What a full van weighs
Eight seats and a load of luggage adds up fast. It is a long way from the unladen weight these vans are quoted at.
Rear bearings on a front wheel drive van carry that with no driving torque at all. They are pure load bearings, and load is what finishes them.
An all wheel drive van adds its own hardware on top of that load. The rear axle assembly, the driveshaft and the run flats all add weight the first generation never carried.
None of that shows up on a window sticker. It shows up at the rear hub, which is why the rear bearing on a loaded, all wheel drive van works harder than the number on the door jamb suggests.
Diagnosing a Sienna wheel bearing
- Confirm the drivetrain before ordering anything, front or rear.
- Measure tread depth on all four, especially on an all wheel drive van.
- Ask what it has hit, since run flats pass impacts through.
- Weave at road speed and note which side loads the noise.
- Compare hub heat across the rear axle after a drive.
Those are on the checking page.
Price links lead to Amazon searches for that number. As an Amazon Associate this site earns from qualifying purchases.
Common questions
Which Sienna wheel bearing do I need?
Check the drivetrain and the year first. 512456 covers front wheel drive and 512482 covers all wheel drive on the newest vans. The front also adds a second part after 2003.
Why does my van have no spare?
The all wheel drive driveshaft occupies the spare well, so Toyota fitted run flats instead.
Do run flats really shorten bearing life?
The mechanism is sound, since a stiff sidewall passes impact through. It is not a measured figure.
Why does the front need two part numbers?
The catalogs split it into an outer bearing and an inner bearing and hub assembly starting in 2004. Only the inner part depends on drivetrain.
Do I need a press?
Only for the front on vans built before 2004, which use a separate ball bearing. The rear and the newer front are hub assemblies that bolt on.