Northstar engine numbers
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Northstar Engines and System Technical Discussion Discussion, Northstar engine numbers in Cadillac Engine Discussion; Can anyone tell me how to identify the year and version of a used Northstar engine from the number stamped ...
  1. #1
    ianr57 is offline Cadillac Owners Member
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    QuestionNorthstar engine numbers

    Can anyone tell me how to identify the year and version of a used Northstar engine from the number stamped on the casing tag: 6TU299231 ?


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  3. #2
    Katshot's Avatar
    Katshot is offline Cadillac Owners Master
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    Re: Northstar engine numbers

    Quote Originally Posted by ianr57
    Can anyone tell me how to identify the year and version of a used Northstar engine from the number stamped on the casing tag: 6TU299231 ?
    That is the VIN Derivative plate and it decodes as follows:
    6=Cadillac
    T=1996
    U=Hamtramck Plant
    299231=production sequence number

  4. #3
    bobitchin is offline Cadillac Owners Member
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    Re: Northstar engine numbers

    Hi,

    I have a '99 STS and I was told it had an engine from a newer Cadillac installed. How can I tell what year and model the engine came from? The number on the tag at the rear of the engine has the following: 619MLNHOWC2.... then to the right a 9ML, then at the bottom 24209619.

    Thanks

  5. #4
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: Northstar engine numbers

    Katshot; you should know that if you give a man a fish you feed him for the day, if you teach him to fish you feed him for life.

    Quote Originally Posted by Katshot View Post
    That is the VIN Derivative plate and it decodes as follows:
    6=Cadillac
    T=1996
    U=Hamtramck Plant
    299231=production sequence number

  6. #5
    97DevilleConcours is offline Cadillac Owners Member
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    Re: Northstar engine numbers

    Is this plate visible by just sticking a flashlight under the car?

  7. #6
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install 26 inch wheels
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    Re: Northstar engine numbers

    It's not a "plate' - it's a machined pad on the right side of the engine bloc, toward the front. The VIN derivative is either stamped or etched into the pad.

    You really need the car up on a lift ............

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