This strap fits perfectly on my 2001 C5 Z06. This belt is for the accessory main drive, not the AC drive. I bought this to fix a horrible squeaking noise I heard while driving a few days ago. If you're doing the same thing, I recommend getting the idler pulley and idler pulleys while you have the belt off (or at least fill them with high-temp, high-speed grease). Unfortunately, after installing this belt, I found that my AC idler pulley actually squeaked, so I'll be replacing it once I get new parts. While there I also got a gatorback belt. (4040420) for the air conditioning.
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