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The short version
- A Titan wheel bearing on the 2012 trucks splits on a build date in December 2011.
- Trucks built through December 2011 take 515125, and trucks from December 2011 take 515155 or 515156 by drivetrain.
- 515125 also carries an improved design marker, meaning it superseded what the truck left the factory with.
- Every other year splits cleanly on two wheel drive against four wheel drive.
Two things happened to this truck’s front hub at once, and 2012 is where they overlap. That makes it the year worth slowing down on.
The December 2011 changeover
Trucks built through December 2011 are cited with 515125, and trucks from December 2011 with 515155 for four wheel drive or 515156 for two wheel drive.
The door jamb label carries the build month and year. The model year alone does not settle it.
The improved design marker
The 2008 to 2012 listing for 515125 carries an improved design note in the catalog.
That is the manufacturer conceding the original part did not last, and it is a reason to buy from a supplier with a current catalog.
Titan wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2016 to 2018 | Four wheel drive | 515171 check price |
| 2013 to 2015 | Four wheel drive | 515155 check price |
| 2013 to 2015 | Two wheel drive | 515156 check price |
| 2012 | From December 2011, four wheel drive | 515155 check price |
| 2012 | From December 2011, two wheel drive | 515156 check price |
| 2008 to 2012 | Through December 2011, improved design | 515125 check price |
| 2004 to 2007 | Front | 515066 check price |
Every model year this chart resolves: 2004, 2005, 2006, 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.
What these are used for
A full size truck that never works is unusual, and towing defines hub life here more than mileage does.
A conventional hitch sits behind the rear axle and levers load forward onto the front hubs, which is where these fail.
Those are on the towing page and the vehicle weight page.
The impact warning
Nissan warns across its range that a single hard hit on a curb or pothole can damage the races without leaving a mark.
On a truck that works off pavement, that is a realistic explanation for noise with no play at all.
Those are on the pothole page and the no play page. The make overview is on the Nissan page.
Diagnosing a Titan wheel bearing
- Read the door jamb build date on a 2012 before ordering.
- Confirm the drivetrain for every other year.
- Ask what it has hit and what it tows.
- Rock the wheel at twelve and six, expecting a stiff feel.
- Compare hub heat across the front axle after towing.
Those are on the checking page.
Common questions
Which Titan wheel bearing fits a 2012?
It depends on the build date. Through December 2011 is 515125, and from December 2011 it splits on drivetrain.
Where do I find the build date?
The label in the driver door jamb.
What does improved design mean?
The original part had a weakness and was replaced by a better one under the same application.
Why is there noise but no play?
Impact damage can dent the races invisibly, which Nissan warns about across its range.
Does towing wear them faster?
Yes, especially with a conventional hitch behind the axle.
Do I need a press?
No. These are bolt on hub units.
Should I do both fronts?
Only what is worn, though a working truck often needs the second soon after.