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2011 Dodge Durango pinion bearing

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Tibfreak

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Discussion starter · #1 · (Edited)
Hey guys, new to the site.

I have a 2011 Dodge Durango 5.7 AWD. It's currently at mechanic to get the pinion bearing replaced(was making loud whining sound).

He ordered a bearing kit. But he says the kit he ordered all the bearings were too small. And can't seem to find the right one. He says it has the 3.45 rear differential in it.

He says this gear ratio is not a common one but from what I'm researching it is? I just believe ordered the wrong kit for it. If someone can point me in the right direction or a link to the proper kit it'd be greatly appreciated.

I know absolutely nothing about differentials and gear ratios but know that I see alot of numbers like 3.09 and 3.45. And 195mm and 230mm. It's all foreign language to me.

I'll supply pic with what he ordered from O'Reilly Auto Parts.
And also a pic of the info of differential I'm guessing is what he sent me

Image
Image
 
#2 ·
Hi Tibfreak, and welcome to DDN. The early Gen 3 V8 Durangos had the 5 speed Nag1 trans if I recall correctly. I think they might have been equipped with a 3.47 ratio. Is this the front or rear differential?
The 9.25 differential was in the solid rear axle trucks, the rear wheel drive Gen 1 and 2 Durangos, as well as the part time 4 x 4 Gen 1 Durangos.

Don
 
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Discussion starter · #3 ·
It's the rear differential. I'm trying to find where to get the proper kit. He's saying he can't find it. They're all too small. I just think he's looking for the wrong one. Which is good to know seeing as he's the idiot working on it.
 
#4 ·
OK:
If you run the build sheet from the VIN, it should tell you the ring gear size, ie 215,220, or 230 mm. The differential in these IRS (independent rear suspensions) are usually swapped out as an assembly and not repaired/rebuilt.

Don
 
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#6 ·
Excellent:
So, you have the 225 mm diff with the 3.47 ratio.
If the kit you got is for the 9.25, that won't work.

Here is a 9.25 inch rear end:

Image


Don
 
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#11 ·
Depending on which carrier you have:

Bearing is either 4862630AA or 631AA, showing available

Seal is either 68084189AA or 68019927AA

All are showing still available. Check with your dealer as to which ones you need.

Ratio and carrier part number should be on the pumpkin. They didn't go to ZF carriers until 2015. Should be the 545RE in 2011. A580 was V6 only through 2013.
 
#15 ·
Tibfreak said:
^^^^That's a foreign language to me 😂
Click to expand...
68019927AA is the correct seal (Mopar)

SKF is the OEM vendor. When I cross-referenced the Mopar bearing numbers off RockAuto, I got SKF BR129 and BR130. From what I could determine, the BR129 is the inner and 130 is outer.

When we're taking about differentials here, these cars have independent front and rear suspension, so the part everyone calls the "axle" is correctly referred to as a "carrier".
The axles, in our case, would be the Constant Velocity axles that run from the carriers.

You still absolutely need to crawl under that thing, get the Mopar part number for the carrier, plus the ratio. It may be the 225mm, but I've never seen a 3.47 ratio in any Chrysler product, so my guess is that it was misread. The carrier part number is what you really need. Also, write down the last 8 digits of your VIN (two letters, 6 numbers). The dealer will ask for that. Your looking for a pinion bearing kit. Mopar may have offered that for dealer servicing. If he can't get anything, then ask for the discontinued part numbers. If he says they weren't available, just thank him and leave. They did offer the parts through (at least) 2013.
 
Discussion starter · #18 ·
Ok. Turns out parts not serviceable. So used differential it is. Still confused on the fact Dodge dealer themselves told me it has 3.47 gear ratio. But when I look up. They literally all have 3.45 or 3.09
 
#19 ·
Tibfreak said:
Ok. Turns out parts not serviceable. So used differential it is. Still confused on the fact Dodge dealer themselves told me it has 3.47 gear ratio. But when I look up. They literally all have 3.45 or 3.09
Click to expand...
Yes, they're serviceable, at least through 2013. I listed the SKF part numbers. You can ever cross-reference the BR129 and BR130 on the SKF website, and they show them as pinion bearings for the WD.
 
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