Does this require drilling into the frame or bumper?

No. This bar connects at factory-existing mounting points — no drilling or frame modification needed. Just bolt it in place where the OEM attachment hardware is already designed.

What prep work is required before I install it?

You'll want to sand and prime the unfinished surfaces, then paint to match your bumper. Do this before bolting on so you're not painting around installed parts.

Will this interfere with a trailer hitch or parking sensors?

Mounting method is designed for standard factory locations — test-fit before final installation to confirm clearance with any aftermarket hitch or sensor packages on your vehicle.