Will I need new O-rings or seals when I install this?

Check your OEM service manual for condenser replacement procedures — Subaru specs may require new seals at connection points. Pick up the gasket kit separately to avoid leaks during install.

Do I need to flush the old refrigerant before swapping the condenser?

Yes. Debris and moisture from a failed condenser can wreck your compressor. Flush the entire system with approved solvent before installing this unit, or have a shop do it. Non-negotiable.

Can I install this myself, or do I need a tech?

Removal and bolt-in is straightforward, but AC work requires EPA certification to handle refrigerant legally. Evacuation, condenser swap, and recharge must be done by a licensed tech. Plan for a shop visit.