Do these come with bulbs?

Bulbs are not included — you'll reuse your existing bulbs from the factory markers during swap-out.

Will these fit my bumper if it's been modified or replaced?

These are designed for factory bumper side marker cutouts. If your bumper has been replaced or heavily modified, test-fit before committing to installation to confirm alignment.

Do I need to remove the entire bumper to install these?

No — you can access the stock markers from behind the bumper or from underneath, depending on your vehicle's design. A basic socket set is all you need.