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The short version
- An MKX wheel bearing at the rear carries an except twenty two inch wheels qualifier, so wheel size matters.
- 513394 is cited for all wheel drive and 512580 for front wheel drive on the 2015 onward cars.
- The front is 513394 across 2015 to 2018, shared with the Ford Edge it is based on.
- Large factory wheels are common on these, which makes that qualifier worth reading twice.
Wheel diameter is not usually a fitment question. It is here, because the largest wheel option came with different hardware behind it.
Read the wheel size
The 2015 to 2017 rear listings for 513394 and 512580 are qualified as except twenty two inch wheels.
A car on the largest factory option is outside those listings and needs confirming separately.
The size is printed on the tire sidewall after the profile. Aftermarket wheels break the test, so work from the old part instead.
The Chevrolet Cruze splits on wheel size too, at the other end of the vehicle scale. That page is the Cruze page.
MKX wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2015 to 2018 | Front | 513394 check price |
| 2015 to 2017 | Rear, all wheel drive, except 22 inch wheels | 513394 check price |
| 2015 to 2017 | Rear, front wheel drive, except 22 inch wheels | 512580 check price |
| 2011 to 2014 | Rear | 513275 check price |
| 2007 to 2010 | Front | 518517 check price |
| 2007 to 2010 | Rear, all wheel drive | 512335 check price |
Every model year this chart resolves: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018.
Price links lead to Amazon searches for that number. As an Amazon Associate this site earns from qualifying purchases.
Cross referencing is on the cross reference page.
The Ford underneath
The same numbers are cited for the Ford Edge of each era, including the wheel size qualifier.
The Edge sells in far larger numbers, so a search under Ford returns more listings for the identical hub.
Search the number rather than the badge. The make overview is on the Lincoln page.
Weight and a quiet cabin
These are heavy and insulated well, which is a poor combination for hearing a bearing early.
The weight loads the hub while the cabin hides the noise, so owners arrive late as a rule rather than an exception.
Those are on the vehicle weight page and the noise page.
What large wheels do
A taller wheel moves the contact patch further from the bearing center line, which increases the leverage on it.
A shorter sidewall also absorbs less of a pothole, so more of the impact reaches the hub.
On a vehicle this heavy, running the largest option, both effects add up over years rather than miles.
Those are on the spacers page and the pothole page.
Diagnosing an MKX wheel bearing
- Read the wheel size off the tire sidewall before ordering a rear part.
- Confirm the drivetrain, since it splits the rear.
- Search the Ford Edge listings too, since the numbers match.
- Drive with the windows down, because the cabin hides early noise.
- Weave at road speed and note which side loads the noise.
Those are on the checking page and the tire noise page.
Common questions
Does wheel size change an MKX wheel bearing?
The rear listings are qualified as except twenty two inch wheels, so a car on that option needs confirming separately.
Where do I read the size?
The tire sidewall, after the profile. If the car is on aftermarket wheels, work from the old part.
Can I buy a Ford Edge part?
The same numbers are cited for both. Check the number rather than the badge.
Does drivetrain matter?
At the rear yes, 513394 for all wheel drive and 512580 for front wheel drive.
Do I need a press?
No. These use bolt on hub units.
Why did I not hear it sooner?
The cabin insulation is very good, which masks early bearing noise.
Should I replace both sides?
Only what is worn.