The Mahle Automatic Transmission Oil Cooler Thermostat (E83 X3) - TO775 is a high-quality replacement part for BMW E83 X3 vehicles. This thermostat is responsible for regulating the flow of transmission oil through the cooler, ensuring that the oil stays at the optimal temperature for efficient operation. It is designed to meet or exceed OEM specifications and is made with durable materials to ensure long-lasting performance. This thermostat is easy to install and is a crucial component for maintaining the health and longevity of your vehicle's transmission system.