The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. The PERRIN Performance Radiator Shroud caps the top of the radiator for a sleek new look and forces all available airflow through the core. This lowers operating temperature and increases power. Black powder coated aluminum. All feature a silk screened PERRIN logo for that hot/cool look. *Construction* Made from aluminum, it is corrosive proof in those states with salt used during the winter time.