Does this condenser come with new O-rings or seals?

The condenser assembly ships without seals or O-rings. You'll need to source these separately and install them during the swap to prevent refrigerant leaks.

What hardware do I need to mount this?

Mounting bolts and fasteners are not included. Use the original hardware from your vehicle — it's compatible with the factory mounting points on this condenser.

Do I need to have the system evacuated before installation?

Yes. AC systems must be properly discharged by a certified technician before you remove the old condenser. Have the new unit installed and the system recharged by someone qualified to handle refrigerant.