The Mishimoto Nissan 350Z Air Diversion Plate is not only intended to enhance the aesthetic appeal of your engine, but will reduce your coolant temperature by preventing incoming air from diverting around the radiator. All Mishimoto air diversion plates are constructed of 5052 aluminum and are available in several finishes. Choose from a natural brushed matte or an anodized glossy black or blue to enhance the look and style of your Nissan's engine bay.