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Old 08-19-2013, 05:01 PM   #1
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Rear axle gear ratio

Just curious on rear axle ratio. I recently purchased a used 2007 jeep Sahara Unlimited. Is there anyway to find the gears installed. It has an automatic and tow package.

Thanks in advance

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Old 08-19-2013, 05:02 PM   #2
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Call a dealership, give them the VIN number and they should be able to tell you what it came installed with.

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Old 08-19-2013, 05:03 PM   #3
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Google 'jeep vin decoder'
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Old 08-19-2013, 05:07 PM   #4
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3.73 most likely, but I think 2007's had 4.10 option on the Sahara's.
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Old 08-19-2013, 05:24 PM   #5
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Quote:
Originally Posted by jasmyers1 View Post
Just curious on rear axle ratio. I recently purchased a used 2007 jeep Sahara Unlimited. Is there anyway to find the gears installed. It has an automatic and tow package.

Thanks in advance
I saw a post saying look at the diff cover in back and there should be a small plate with the ratio stamped on it under one of the bolts.

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Old 08-19-2013, 06:47 PM   #6
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Call a dealership, email Jeep, or log/sign into Jeep.com.

42RLE's came with 3.73's, but there was a 4.10 option on non-Rubi's in early JK's.

If I remember correctly, the stamps on the axle stopped with the JK's as well.
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Old 08-20-2013, 05:55 AM   #7
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yes the rear axle has a small tag on one of the bolts with the ratio stamped in it
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Old 08-20-2013, 09:39 AM   #8
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Is there a stamp or a tag that indicates limited slip also?
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Old 08-20-2013, 09:49 AM   #9
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see post 1 in this thread ---> factory build sheet follow the link and provide info. you'll find out everything your rig came off the assembly line with
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Old 08-20-2013, 09:54 AM   #10
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Quote:
Originally Posted by rdg04578 View Post
yes the rear axle has a small tag on one of the bolts with the ratio stamped in it
people keep saying that, but I dont think JK's had that. I have pulled more than a few JK axles and never seen one. my brand new 13, buddies 11, and a few more all didnt have one.
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Old 08-20-2013, 11:14 AM   #11
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people keep saying that, but I dont think JK's had that. I have pulled more than a few JK axles and never seen one. my brand new 13, buddies 11, and a few more all didnt have one.
Exactly....

This is what it looks like on a TJ.



From a D60


The tag "used" to be here:




But I've yet to see one on a JK. I've looked at mine, there is nothing that says 3.73 anywhere. If someone has a pic of the tag or stamp on their JK, please post it...and the year of the vehicle. I assume it stopped with all JK's, but maybe it is just with JK's that have D44's in the rear. I think some early JK's might have had D35's....maybe those are stamped.

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