Codes for '81 Chrysler axle

J Body General Discussion

  1. Trey

    Trey Well-Known Member

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    Is there anyway to decode the axle code on the window sticker of my car? The code for my rear axle is D91 on the sticker. I know it's a sure grip but I can't find anything to tell me the ratio from those numbers? The tag on the axle cover is rusty and I can't read it. Thanks for any help.
     
  2. 89.Fifth

    89.Fifth Well-Known Member

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    Your only real option is to pull the cover and look for the stamping on the ring gear. Or count teeth. Personally I can't get a reliable number by turning the tire and counting the axle rotations.
     
  3. XfbodyX

    XfbodyX Well-Known Member

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    D91 is a sure grip code, D50-s would be the ratio.
     
    Last edited: Aug 11, 2019
  4. Trey

    Trey Well-Known Member

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    Thanks for the tips guys.