[mrvegas2008]

Can anyone tell me, which Pulley is on the picture? The belt is gone and one of the pulley's is messed up, as you can see on the image. I'm sure it's not the Alternator's pulley. I'm guessing is the guide pulley. Can anyone tell me which pulley is on the image?

It's a CLK 430 , W208 - 8 cylinder

Thanks