Do I need new bolts or studs when installing this assembly?

Your existing wheel studs will reuse with this hub assembly. Inspect studs before installation—if any are bent or stripped, source replacements before final torque.

Is this a sealed bearing unit or do I need to pack it with grease?

This assembly ships as a pre-assembled unit. Installation process and any bearing maintenance should be confirmed against your vehicle's service manual.

What tools do I need to swap this in?

You'll need a socket set, jack, jack stands, and basic hand tools. Refer to your vehicle's service manual for torque specs and step-by-step removal procedure.