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How do I know if I have 3.55 or 3.73?

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Old 05-22-2013, 07:20 PM
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there is a tag wrapped around the rear axle mine was on the passenger side it has a barcode and the gear ratio is right on it.
Old 05-23-2013, 09:38 PM
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After looking at my door it looks like I have an AXLE that shows L9 on my brand frickin' new 2013 FX4 someone please tell me it is the 3.73. I paid for the 3.73 not the 3.55. If this is the case what kind of hell am I going to go through to change that out is that a major deal and will I be looking at issues down the road.
Old 05-23-2013, 09:48 PM
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Originally Posted by NewFx42013
After looking at my door it looks like I have an AXLE that shows L9 on my brand frickin' new 2013 FX4 someone please tell me it is the 3.73. I paid for the 3.73 not the 3.55. If this is the case what kind of hell am I going to go through to change that out is that a major deal and will I be looking at issues down the road.
http://bit.ly/131dprp
Old 05-23-2013, 10:02 PM
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Default Do Axle Ratios have to Match?

I have a code of L9 and B6 is this not front 3.55 and back 3.73. Please help before I put this baby in 4 wheel!
Old 05-23-2013, 10:04 PM
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Originally Posted by gnarlet

Thanks man I did that too but it came back as: One site says 3.55 and the other 3.73 Grrr



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