Do these covers fit over my existing fog lights or do they replace them?

These are bolt-on covers that mount over your factory fog light housings. Your lights remain functional behind them. Verify your fog hole dimensions match standard sizing before purchase.

What prep work is needed before painting?

Sand the surface with appropriate grit to remove gloss and promote paint adhesion. Clean thoroughly to remove dust before applying your chosen primer, base coat, and clear coat system.

Will these covers require drilling or do they use factory mounting points?

Mounting depends on your bumper's existing fog light bezel configuration. Check your factory fog light opening structure and hardware before installation to ensure compatibility with standard fastening methods.