Will this bolt straight onto my vehicle without any modification?

Yes — this uses factory mounting points, so no drilling or custom brackets required. Line up the studs and bolt it down.

Does the bulb come with it?

The assembly ships without the bulb. You'll need to transfer your existing bulb or grab a standard replacement halogen bulb from any auto parts store.

What if it doesn't seal properly after installation?

Check that the gasket or seal is seated evenly in the mounting groove before final tightening. If water intrusion occurs, inspect the gasket condition — it may need replacement depending on age.