303 Aerospace Protectant 32 oz. - Case of 8 303 Aerospace Protectant has a SPF of 40, the most UV protection offered by any surface protectant. It will prevent drying, cracking, and fading caused by overexposure to the sun. It was originally formulated for aerospace and aviation applications, machines that come much closer to the sun than your vehicle. Repels water and dirt, and resists stains. 32 oz.