Do I need to replace the wheel speed sensor when I install this hub?

The assembly includes an ABS tone ring ready for your existing sensor. Sensor replacement depends on whether your current unit is still functioning—test it before deciding to swap it out.

What hardware do I need to bolt this to the vehicle?

You'll need the fasteners that originally mounted your OEM hub. If you're unsure which bolts came out, reference your vehicle service manual for torque specs and fastener count.

Is this assembly lubricated and ready to use out of the box?

The bearing is pre-lubricated and sealed as a complete unit. Install it directly—no additional grease or preparation is needed.