How do you replace serpentine belt on 2005 350z?

To replace the serpentine belt on a 2005 Nissan 350Z, first, locate the belt tensioner and use a wrench to relieve tension on the belt. Remove the old belt from the pulleys, then route the new belt according to the diagram usually found on a sticker in the engine bay. Once the belt is positioned correctly, release the tensioner to secure the belt. Finally, double-check the installation before starting the engine to ensure everything is properly aligned.