Could anyone give me the Gates or Dayco number for the alternator V belt, just can't remember it and trying to get her back on the road after many years.  63 wA/C

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 According to OReilly's:
Gates XL V-Belt 3/8 Inch x 53-5/16 Inch - 7525
Part #:7525 Fits Cadillac DeVille V-Belt Fan And Alternator; With Air Conditioning

I ordered a full set of belts a couple of years ago from Amazon for about 1/3 the price as the same belts at auto parts stores.

Thank you, Kurt, much appreciated. Auto parts stores prices have just gotten ridiculous. Just bought the fuel hoses from the tank, O' Reilly's charged about $5 a foot for 1/4"and 5/16" fuel hose!

Gates 7525 is what I have noted for AC cars. 7530 is what I have listed for the non-AC cars. It is slightly longer (53 13/16"long) to accommodate the wider 2 groove water pump pulley used on non-AC cars. 

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