Does this carbon fiber grille need clear coat, or does it come with a protective finish?

Carbon fiber benefits from clear coat protection to guard against UV fading and maintain that rich finish over time. Your grille ships uncoated, so applying a quality clear coat before or after installation is the best way to preserve the carbon weave and color long-term.

How do I seal the edges where the carbon fiber meets the surrounding plastic or metal?

Sand the mounting surfaces lightly with fine-grit sandpaper to ensure a clean fit, then use a flexible trim sealant or adhesive-backed rubber gasket around the perimeter where the grille meets the bumper opening. This prevents debris and moisture from collecting behind the grille and keeps the installation clean.

Will the carbon fiber weave be visible, or is it covered by a glossy finish?

The 2x2 twill weave pattern is part of the visual appeal—it's visible and integral to the carbon fiber aesthetic. Once you apply clear coat, that weave becomes even more defined and protected. If you prefer a solid finish, wet-sanding and multiple clear coat layers will obscure some of the pattern detail.