Rear Axle Tag decoder

Discussion in 'Drivetrain Tech' started by DeanMk, Sep 18, 2012.

  1. DeanMk

    DeanMk Member

    Anyone know how to decode the rear axle tag?

    Mine says...

    45 75 B112

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  3. hazard-maine

    hazard-maine northern ranger driver

    thats the code on the tag in the door opening
  4. 360Ranger

    360Ranger USAF Veteran


    I'd guess you can't see the number by the bolt:

    3.45 geared 7.5 rearend...........very common in 4cyl, 5spd Rangers through the 90's.
  5. klinger86

    klinger86 Moderator

    if you'll look on the tag inside the drivers door and find the axle code we can help point you in the right direction to find out which rearend you have...
  6. OP

    DeanMk Member

    No need, I already know the 84 on the door sticker corressponds with a 3.45 geared open 7.5" rear end, but the truck's 14 years old and, according to someone I recently spoke with, who claimed to be a former owner, it has already been through many hands before getting to me.
    I just wanted to make sure I actually had what I thought I did, and it seems that I do.
    Thanks for filling me in, 360Ranger.

  7. 03walkalot

    03walkalot New Member


    I know this is an old thread but I'm new and just catching up on the learning curve. Just checked my door tag and my code is a 97, 8.8 open rear with 4:10s
    Now I'm just wondering how these gears will work with 32 or 33" tires?:blink:
  8. klinger86

    klinger86 Moderator

    they should work fine as long as your motor has enough umph to turn them... ie having a v6 compared to a 4cyl...
  9. 03walkalot

    03walkalot New Member

    Yea sorry should have put that in the post, I have the 4.0L
  10. klinger86

    klinger86 Moderator

    yeah you'll be fine member Hooligan has the 4.0 and 4:10 gears and run 33's or 35's on his truck i cant remember which size exactly.... the only thing is he gets around 10mpg with them hahahahaha....

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