The Ambient Air Temperature Sensor Base by ACDelco is a genuine GM Original Equipment part designed for vehicles. This temperature sensor, with manufacturer part number 13583411, has a compact design with dimensions of 0.5 inches in height and 0.85 inches in width, making it easy to install in various car and truck models. Weighing only 0.02 pounds, this sensor accurately measures ambient air temperature for optimal heating and cooling performance in vehicles.