Genuine OEM Volkswagen Drive Chain, part number 04E115225J. This chain transmits rotational power from the crankshaft to the camshaft(s) to synchronize valve timing. It is part of the engine timing system. This part weighs 0.155 kg. Genuine OEM drive chains are manufactured with precise pitch and tensile strength to ensure accurate and durable synchronization of crankshaft and camshafts, preventing timing errors.