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Dana BOM numbers....

Discussion in 'The Garage' started by SUBFAN, Mar 8, 2006.

  1. SUBFAN

    SUBFAN 1/2 ton status

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    I have a number I got off an axle, but the Dana sight can't 'find' it....

    The number is C 1U3 WY300 B 191 A

    Does this make any sense to anyone?

    Does anyone have a link or something on how to break these numbers down?

    I got this number off the front of the passenger side axle tube, D70.

    All help is appreciated....
     
  2. b454rat

    b454rat 1/2 ton status Premium Member

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    Those numbers aren't the BOM. It has 6 numbers, starting with 6 IIRC It should be the set of numbers, then the ones you have listed...
     
  3. atho

    atho 1/2 ton status

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    x2...it will be something like 603643-2. thats just an example (a dodge D60) but yours will be similar. it might not have the -2 part, either. thats usually used to denote different gear ratios and posi/locker carriers in an axle.
     
  4. JeffHK5

    JeffHK5 1/2 ton status

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    I have had a half dozen D70 rears over the last couple years and they all have had a 605###-# BOM. My current D70 is from a 80' U-Haul type box truck and had a almost unreadable BOM , but with some wire brushing and a grease pencil I deciphered it. To get you in the ballpark casting styles like
    U,B,HD, HD3 and the unmarked "plain" will get you moving in the right direction. Things like 4" tubes will tell you that it's a HD, and there where five different axle flange to hub mounting styles. By this I mean bolt circle dia. and bolt size.

    Jeff
     
  5. SUBFAN

    SUBFAN 1/2 ton status

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    Found on the pass. side rear of the tube, correct?

    How interchangeable are the parts from all the different styles?
     
  6. tarussell

    tarussell 1/2 ton status

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    Correct .

    The interchangeability depends on which axles are being compared. Some D70's will exchange ring & pinions while others will not. The HD models have different carriers and will not interchange with other D70's with out some machine work. There are bearing differences in pinion and carriers depending on what models. Then there is the axle length & spline count issues along with wheel hub differences.
    Find out what the B.O.M. say's and try and compare different D70's after you know what Ya' got .

    HTH's Tom
     

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