Identifying the pulley shouldn't be this hard.
Go out to your car with the pulley, and match it up with the alternator. If it's a similar size, it's the alternator pulley.
If it's a lot bigger, it's the P/S pulley.
Go out to your car with the pulley, and match it up with the alternator. If it's a similar size, it's the alternator pulley.

If it's a lot bigger, it's the P/S pulley.
