Will these brackets work with an aftermarket bumper cover?

These are engineered for factory bumper geometry. Aftermarket covers vary in mounting point locations — test fit before final installation to confirm alignment with your specific cover.

Do the bumper sensor holes line up with the factory layout?

Yes. These brackets maintain factory sensor hole spacing and don't obstruct the mounting area. If your bumper cover has been modified or cut, verify cutout positions before installation.

What fasteners do I need to bolt these on?

Mounting hardware is not included. You'll need bolts that match your vehicle's factory attachment specifications — refer to your service manual or contact a dealer for the correct size and torque specs.