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04 front diff size

Discussion in '1st Gen. Tacomas (1995-2004)' started by Inverno4, Mar 26, 2012.

  1. Mar 26, 2012 at 5:50 PM
    #1
    Inverno4

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    Inverno4 [OP] Well-Known Member

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    From reading on here, I was under the impression that my stock 04 front diff was a 7.5", but according to this site, its an 8". Any insight? My door says B03A, is that for the front and rear?

    http://home.4x4wire.com/erik/diffs/#taco_ifs
     
    Inverno4, Mar 26, 2012
    #1
  2. Mar 26, 2012 at 5:54 PM
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    jberry813

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    jberry813 Professional Fluffer Moderator

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    It's a 7.5 (reverse clamshell)
    First manufacture date of the second gens was in 2004
     
    jberry813, Mar 26, 2012
    #2
  3. Mar 29, 2012 at 3:48 AM
    #3
    Inverno4

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    Inverno4 [OP] Well-Known Member

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    Even though my door code reads "B03A", I still have a 7.5"?
     
    Inverno4, Mar 29, 2012
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  4. Mar 29, 2012 at 8:43 AM
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    jberry813

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    jberry813 Professional Fluffer Moderator

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    B03A is the rear axle.
    Means you have 8" pinion gear with 410s.

    I attached the axle decodeing PDF for ya.
     

    Attached Files:

    jberry813, Mar 29, 2012
    #4
  5. Mar 29, 2012 at 9:00 AM
    #5
    Inverno4

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    Inverno4 [OP] Well-Known Member

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    Thank a lot. I've needed a new front diff for awhile because of the needle bearing issue discussed on here a lot and want to make sure I get the right thing. Is there any type of chart that shows what diffs work in what vehicles? Does a 1999 4Runner front diff fit my 2004 Tacoma for instance?
     
    Inverno4, Mar 29, 2012
    #5
  6. Mar 29, 2012 at 9:15 AM
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    jberry813

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    jberry813 Professional Fluffer Moderator

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    Don't know. Keep in mind the 04 diff is an vacuum based ADD diff. Some of the older trucks have manual hubs and I think the diffs are different.
     
    jberry813, Mar 29, 2012
    #6

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