Perrin's Radiator Shroud is designed to push more air through your radiator, making your Subie run much colder. When your vehicle is in motion, air goes through the grill and is pushed across the radiator. Some air escapes around the top and bottom, limiting the efficiency of the radiator. Perrin's shroud fits over the top of the core support and radiator, limiting the amount of air that escape. This simple bolt on will increase performance and add to your vehicle's looks. Features a Perrin logo on the core support, and is constructed of powder-coated black steel.