Genuine OEM Audi Gearbox Heat Shield, part number 4M0399307F. This left-side heat shield is designed to protect sensitive gearbox components from high temperatures generated by the engine or exhaust system. It helps maintain optimal operating temperatures for the transmission, extending its lifespan. Weighing approximately 0.036 kg and measuring 0.132 meters in length, it provides a precise fit. Using a genuine OEM heat shield ensures the correct material and design for effective thermal management and long-term durability.