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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Tag on Rear Differential

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Old Jun 2, 2012 | 05:48 PM
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Default Tag on Rear Differential

Does anyone know how to decipher the code on the rear diff tag to learn what differential and gears you have?
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Old Jun 2, 2012 | 05:52 PM
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It says on ur door jam sticker. There's a thread about it
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Old Jun 2, 2012 | 06:14 PM
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Originally Posted by Bshipe22
It says on ur door jam sticker. There's a thread about it
Whats the title of the thread?
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Old Jun 2, 2012 | 07:11 PM
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You have an fx4 right? If you do then you have a 3.73 with a limited slip
On the door sticker where it says axle code it should say B6
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Old Jun 2, 2012 | 07:28 PM
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look at the tag, there should be some sumbers like 3 55 or 3z55. The 3z55 would be 3.55 with t-lok. No z=open.
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Old Jun 3, 2012 | 10:40 PM
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Originally Posted by scobar
look at the tag, there should be some sumbers like 3 55 or 3z55. The 3z55 would be 3.55 with t-lok. No z=open.
its an "L" not a "Z", but yes this is the correct pattern

it will also say on the tag whether it's an 8.8 or a 9.75 rear as well.
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