I'm getting "service engine soon light". The belt is routed right... diagram is on front of hood. These photos are of the part that the part store man said I would have to get from a dealer. I put the idler pulley on without it and don't know how long it will last. But is spinning smooth with no noise so far. Closest dealer from me is about a 100miles or more. The part in photos with the bearing is the one I don't have and it goes between the bearing and the air conditioner mounting bracket.