Genuine OEM Volkswagen Chain Tensioner, part number 059109507AM. This critical component is designed to maintain proper tension on the engine's timing chain, preventing slack and ensuring precise valve timing for optimal engine performance. It is typically located within the engine's timing cover assembly. Weighing approximately 0.22 kg, this part is constructed from durable materials for long-lasting service. Choosing a genuine OEM chain tensioner ensures factory-specified tension, material quality, and precise fitment, which are vital for the longevity and reliability of the entire timing system.