Do I need to replace both front hubs, or can I do just one side?

One unit covers one wheel. If the opposite side shows wear or noise, replace it too — driving on mismatched hubs creates uneven braking and accelerated tire wear. Many shops do both at once to save labor time later.

What tools do I need to swap this out?

You'll need a jack, lug wrench, socket set, and brake caliper removal tools. The hub itself bolts on with standard fasteners — no special pullers or press equipment required if you're replacing a failed unit.

Does this come with new bolts or do I reuse the old ones?

The assembly ships without fasteners — reuse your original bolts if they're in good condition. Inspect them for rust or stripped threads before reinstalling; replace any that look compromised.