Genuine OEM Volkswagen Transmission Oil Reservoir, part number 0B8325161. This component is designed to store and supply transmission fluid, which is vital for lubricating moving parts, cooling the transmission, and enabling hydraulic pressure for gear changes. It is integrated into the transmission's hydraulic system. Weighing approximately 0.54 kg, a genuine OEM reservoir ensures correct fluid capacity, material compatibility with transmission fluids, and precise connection points for leak-free operation and optimal transmission performance.