Do I need to replace my brake caliper and rotor when installing this knuckle?

The knuckle itself doesn't require brake work, but inspect your pads and rotor condition while you have the wheel off. If they're worn, now's the time to replace them since you're already deep in the job.

What tools and hardware do I need to install this?

You'll need a socket set, ball joint press or separator tool, and a torque wrench to spec. Hardware fasteners are not included—source bolts and fasteners to OEM specification or use your existing hardware if it's in good condition.

Is the wheel bearing already pressed and sealed?

Yes. The bearing and seal come pre-installed in the hub. You don't need to press or service them before installation—mount it straight to the vehicle.