Do I need new brake hardware or rotors to install this?

The knuckle itself is a suspension component; your existing brake rotor and caliper will transfer over. If your rotor is worn, swap it while you're in there—good maintenance practice anyway.

Will this work with my current control arms and tie rods?

Yes. This is a direct replacement for the OEM knuckle, so all suspension links bolt to factory points. Check your control arm and tie rod condition while you're working; replace them if they're loose or worn.

What do I need to do after installation?

Get a wheel alignment done. Swapping a knuckle affects toe and camber—a quick alignment ensures your handling and tire wear stay right.