Genuine OEM Audi Transmission Oil Sump, part number 09M321361A. This critical component is designed to hold the transmission fluid, providing a reservoir for lubrication and cooling, while also collecting any metallic debris from normal wear. It forms the bottom cover of the transmission assembly. Constructed from durable stamped steel, it measures approximately 35.9 cm long, 23.1 cm wide, and 7.8 cm high, weighing 1.381 kg. Choosing a genuine OEM transmission oil sump ensures an exact fit, proper sealing, and the correct fluid capacity, which are vital for the longevity and performance of the transmission.