Genuine OEM Audi Upper Timing Chain Tensioner, part number 059109467AL. This component is designed to maintain proper tension on the engine's upper timing chain, securing it in place to ensure precise valve timing and prevent chain slack. It is crucial for engine performance and longevity. Weighing 0.14 kg, this tensioner is engineered for robust and consistent operation. Choosing a genuine OEM timing chain tensioner ensures the correct material strength, dimensional accuracy, and tensioning characteristics, which are vital for preventing premature wear and maintaining engine reliability.