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Old 03-31-2012, 09:07 AM   #1
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W5A580 transmission ?

When you upgrade to the W5A580 trans does that option automatically upgrade the rear end from 3.21 to 3.73?

TIA.
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Old 03-31-2012, 10:08 AM   #2
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3.73s are only standard if you get the a Rubicon auto. Otherwise, they optional ... Unless something has changed.

....and, that's in both diffs, not just the rear.

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Old 03-31-2012, 11:55 AM   #3
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Thanks. Then I guess I need to talk to my dealer as he told me if I went with the auto trans on a Sahara then that would automatically upgrade to 3.73. I assume it's not an easy change if I have the 3.21?
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