Do I need to replace both hubs at the same time?

Not required, but paired replacement on both sides ensures even braking feel and consistent handling geometry. If only one side is worn or damaged, you can replace that side alone.

What tools do I need to install this hub assembly?

Standard socket set, a hub removal tool (or borrowed from your shop), and a torque wrench are the essentials. Your vehicle service manual will specify torque values for the axle nut and knuckle bolts.

Can I reuse the wheel speed sensor from the old hub?

Yes, the sensor is typically transferable if it's in good condition. Inspect the tone ring and sensor connector before reinstalling—corrosion or damage will trigger brake warning lights.