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  • Hi, DieselAmateur
    First of all I have to thank you for your kindness

    I think the pulleys are interchangeable from GM alternator to GM alternator, but I don't know for sure
    have an AC-244 alternator, please make sure the pulley you have will fit AC-244.

    this is my address:
    Celleghin Alessandro
    via Rizzarda, 4
    35018 San Martino di Lupari (Padova)
    Italy
    A
    alex1234
    what may differ is the rear pulley spacer, the distance from the shaft housing and the pulley seat.
    2 pulleys I have here 56mm OD don't have the right spacer, them are 9mm, and the right distance is 6.5mm
    it is essential to have the right distance, in order not to wear out the belt

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    A
    alex1234
    as you can see the pulley is very close to alternator case
    D
    DieselAmateur
    Noted, I will look closely at the pulley I have and see what the seat size is
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