Do I need to sand and prep these before painting?

Yes. Sand the surface with appropriate grit to promote paint adhesion, then clean thoroughly before applying your chosen basecoat and topcoat system. Surface prep directly affects final finish quality.

What fastening method should I use for installation?

Refer to your vehicle's service manual for factory scoop attachment points and fastener specifications. The two-piece design aligns with OEM mounting locations, so use stock hardware or equivalent fasteners rated for your application.

Will these hold up to heat and sun exposure?

FRP is engineered to resist UV degradation and thermal stress. Once painted and properly sealed, these vents maintain their finish and structural integrity. Avoid prolonged contact with harsh chemicals or high-pressure washers directed at seams.