Do these mount to the factory marker light locations?

Yes, these are designed for direct bolt-on installation at the original marker positions. No drilling or fabrication needed—just remove the old units and secure the new ones in place.

Will these work if I'm swapping to a different front bumper?

These mount at the factory marker positions in the bumper beam itself. If your new bumper uses the same mounting points, you're good. If the new bumper has different marker locations, you'll need to verify fitment before ordering.

Are the LEDs replaceable, or do I buy whole new lights if one fails?

LED assembly design not specified—contact support with your VIN to confirm whether individual LEDs can be swapped or if the whole unit needs replacement under warranty.