Will this fit without modifying my bumper or valance?

Yes. This molding mounts at the factory grille opening—no cutting, drilling, or bumper sensor relocation needed. Test-fit before final fastening to confirm alignment with your specific bumper condition.

Does the chrome finish need any prep or protection before install?

The trim arrives with a protective coating. Clean it with mild soap and water, then dry completely before mounting. Avoid abrasive cleaners that can scratch the plated surface.

What fastens this to the bumper?

Mounting method is not specified. Before committing to adhesive or fasteners, test-fit the trim and inspect the factory mounting points on your bumper. Reference your vehicle's service manual for OEM fastener specs if factory points are used.