Do I need fasteners to install this, or does it come with hardware?

Hardware is not included with this valance. You'll use your vehicle's existing factory fastening points. Grab the bolts or clips from your current valance before removal, and they'll work for this replacement.

Can I install this myself with basic tools?

Yes. You'll need a socket set and a few minutes under the bumper. Unbolt the old valance, bolt on the new one at the same factory points, and you're done—no special equipment required.

Does this need to be painted, or does it come primed?

This arrives unpainted. If you want color-matched finish, prepare the surface with light sanding and apply primer and paint before or after installation, depending on your preference and workspace.