Genuine OEM Volkswagen Timing Chain Tensioner, part number 03E109507P. This vital engine component is responsible for maintaining the correct tension on the timing chain, which is crucial for synchronizing the crankshaft and camshafts. Proper tension ensures precise valve timing, essential for engine performance, efficiency, and preventing internal damage. This tensioner, made from durable composite materials with metal elements, weighs 0.099 kg and measures 0.133 m in length, 0.084 m in width, and 0.053 m in height. Opting for a genuine OEM timing chain tensioner guarantees factory-specified tensioning force and material durability, preventing premature wear and catastrophic engine failure.