Do I need new bulbs, or does this come with them?

The headlight housing itself is included—you'll need to transfer your existing bulbs or source compatible replacements. Bulbs are not included with this assembly.

Will this bolt straight onto my vehicle without any modifications?

Yes. This assembly mounts at the factory points with the existing hardware. No drilling, cutting, or adapter plates required.

What happens if the headlight doesn't seal properly after installation?

Test the fit before final tightening. If gaps appear, verify all mounting bolts are fully seated and torqued evenly. Refer to your vehicle's service manual for correct bolt sequence and tension.