Genuine OEM Audi Engine Drive Chain, part number 057109252C. This critical engine component is responsible for synchronizing the precise rotation of various engine parts, such as camshafts and crankshafts, to ensure optimal valve timing. It operates within the engine's timing system. Weighing approximately 0.464 kg, this chain is manufactured from high-strength steel alloys, designed to withstand extreme temperatures and continuous stress. Choosing a genuine OEM engine drive chain ensures exact pitch and link dimensions, factory-specified material hardness, and reliable, long-term performance crucial for engine integrity and longevity.