Does this come with the bulb?

The assembly itself ships without a bulb. Grab a standard H4 bulb separately and you're ready to install.

Will I need new mounting hardware?

Factory mounting points line up with existing holes — reuse your original fasteners or grab new ones from a hardware store if needed.

How do I know this will seal properly once installed?

Test-fit before driving. If you notice any gaps, check that the mounting bracket sits flush and all fasteners are snug. Silicone around the perimeter seals out moisture if you want extra protection.