Do I need to replace the brake rotor at the same time?

Rotor replacement is not required, but inspect yours for scoring or run-out before reassembly. If the rotor is warped or damaged, replacing it now saves a second teardown later.

What tools and fasteners do I need to install this?

You'll need a socket set, torque wrench, and a slide hammer or hub puller to remove the old assembly. Fasteners are not included — grab the hardware matching your existing bolt pattern, or reuse what comes off the old hub.

Will this work if my ABS light is on?

A lit ABS light often points to a failing wheel speed sensor or damaged sensor ring. This assembly includes the sensor mounting surface, so if the old bearing was worn, this should resolve the issue. Have the code scanned first to confirm the fault is sensor-related.