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Alternator part number?

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In trying to order an alternator, I was told I need the part number because there are 2 different ones. Even a dealer parts dept told me this. Apparently there are 2 different pulley sizes. I am guessing the larger pulley is for the Concours because the engine revs higher. Can anyone tell me what alternator part number I need for a 1998 DeVille VIN Y? I'm not sure how to figure it out without removing the alternator and I need to keep driving the car until I get the new one.


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The dealer should be able to order the correct part given the complete, full VIN number of your car.

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