Will these bolt up to my factory headlight buckets?

Yes. These are designed as direct-fit replacements for the OEM housings. Test-fit before final fastening to confirm alignment with your bumper trim.

Why do I need the 9004 to H4 adapters?

Your vehicle came with a 9004 connector at the factory. These adapters let you use standard H4 bulbs without cutting wires or changing the factory plug. Just plug the adapter into your existing harness, then install the H4 bulb.

Do these need paint or clear coat before install?

They arrive brand new and ready to bolt on. If you want to adjust fitment or protection, a light coat of clear over the housings is optional but not required for function.