This 3-1/2" Wide Plastic Fan Shroud efficiently draws cool air in through your Mustang's radiator when you're driving at a low speed and when you're idling, which is when your Mustang is the most likely to overheat. Made from heat-resistant black ABS plastic, tise fan shroud enhances the fan's cooling abilities while also offering more protection for the fan blades. Fits 17-inch radiators.