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Unread 03-05-2014, 04:29 PM   #1
NAMoulton
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4.10 Differentials Gears

I'm looking into swapping gears to a 4.10 and am having a hard time actually finding a previous forum about it. Where do I get front and rear, what brand should I get, and do I need to swap out the differential housing/carrier to fit the 4.10 in there (if so where do I get the new housing). If anyone can help it would be appreciated, between me and the off-road mechanic, we cannot find anything specific. Thank You!

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Unread 03-05-2014, 05:59 PM   #2
brucecadieux
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From another forum.

Quote:
After a very difficult search that in the end turned out to be solved by going to the source I've gotten the part number for a Dana Spicer 4.10 ring and pinion for the KK Liberty. A few people told me that the JK gears are the ones to use and they're correct but while trying to purchase a set, every list I saw said 02-12 KJ Liberty and every salesman told me that the JK gears wouldn't fit. Anyway, I called spicer and the part number is in fact the same as a JK. For 4.10 gears the number is 2005027-5. I provided them with the numbers stamped on my axel and there ya go. I even double checked with another source who ran the numbers and came up with the same answer. Unfortunately, they're $370.00 (oem) bummer.
Sorry the story was so long but I hope it helps.
http://www.lostjeeps.com/forum/phpBB...ic.php?t=45367
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Unread 03-05-2014, 06:01 PM   #3
brucecadieux
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Available at

Front http://jeepinbyal.com/ring-and-pinion-4-10.html

Rear http://jeepinbyal.com/jeep-liberty-2...nion-4-10.html
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Unread 03-05-2014, 06:29 PM   #4
NAMoulton
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Do any of these front diffs work?

http://www.4wheelparts.com/Drivetrai...t_pn=ALYD30410

http://www.4wheelparts.com/Drivetrai..._pn=ALYD30410R

http://www.4wheelparts.com/Drivetrai...pn=ALYD30410TJ

Also do these work with the stock carrier/housing?
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Unread 03-06-2014, 12:10 AM   #5
tjkj2002
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Quote:
Originally Posted by NAMoulton View Post
None of those will work in your D30M front diff.You use JK D30 gear sets for the front of your KK.
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Unread 03-06-2014, 08:00 AM   #6
NAMoulton
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Quote:
Originally Posted by brucecadieux View Post
Is this the 4.10 that is usable for the front diff? It doesn't say anything about it except that it's a 4.10.
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Unread 03-06-2014, 08:40 AM   #7
huntb
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If you read his post he says which one is for the front and which is for the rear before he posts the links.
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Unread 03-06-2014, 11:20 AM   #8
NAMoulton
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Quote:
Originally Posted by huntb View Post
If you read his post he says which one is for the front and which is for the rear before he posts the links.
I did see what he said, but the link doesn't say anything about whether or not that 4.10 is the one that would fit the D30.
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Unread 03-06-2014, 12:19 PM   #9
huntb
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disregard
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Unread 03-06-2014, 12:26 PM   #10
Bmxer524
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Quote:
Originally Posted by huntb View Post
It says "Ring and Pinion 4.10 Gear Kit, Ratio 4.10 2002-2005 Jeep Liberty KJ aluminum housing". You know if it fits the KJ it will fit the KK so we got that part. The next part says "aluminum housing". The D30 is an aluminum housing, don't ask me why, but this is how you know that it is for the front axle.
KJ and KK have different front diffs. If you're regearing the KK front end, you need JK front gears.
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Unread 03-06-2014, 12:33 PM   #11
tjkj2002
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Quote:
Originally Posted by Bmxer524 View Post
KJ and KK have different front diffs. If you're regearing the KK front end, you need JK front gears.
X2.....

Guess nobody reads since I posted that in post #5.
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Unread 03-06-2014, 08:37 PM   #12
NAMoulton
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Quote:
Originally Posted by Bmxer524 View Post
KJ and KK have different front diffs. If you're regearing the KK front end, you need JK front gears.
That's what I've heard about the front diff, but which one? I guess there's reverse cut, short pinion, and normal and I have no idea which one I need.
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Unread 03-06-2014, 08:49 PM   #13
tjkj2002
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Quote:
Originally Posted by NAMoulton View Post
That's what I've heard about the front diff, but which one? I guess there's reverse cut, short pinion, and normal and I have no idea which one I need.
JK front D30 gears are JK front D30 gears,no multiple choice to choose from.
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Unread 03-06-2014, 09:59 PM   #14
NAMoulton
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Do these work?
Would any of these work?


Front - http://www.discountjeepparts.com/pro...ducts_id/42192
- http://www.quadratec.com/products/52440_040X_PG.htm
- http://www.quadratec.com/products/52463_502X_PG.htm

Rear - http://www.quadratec.com/products/52440_110X_PG.htm
- http://www.rustysoffroad.com/jeep-dr...-set-4-10.html
- http://www.quadratec.com/products/52440_110X_PG.htm
- http://www.quadratec.com/products/52419_94X_PG.htm
- http://www.quadratec.com/products/52419_0066.htm (why is this one so much more too?)
- http://www.quadratec.com/products/52463_501X_PG.htm
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Unread 03-06-2014, 10:34 PM   #15
tjkj2002
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The correct rears.............

http://jeepinbyal.com/jeep-liberty-2...nion-4-10.html

You need the newer metric bolt pattern which was changed from a SAE bolt pattern in '02(ring gear bolts).
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