Genuine OEM Audi Engine Timing Chain Tensioner, part number 07D109467G. This vital engine component is responsible for maintaining the correct tension on the timing chain, which synchronizes the crankshaft and camshafts for precise valve operation. Proper tension is crucial for engine performance and preventing catastrophic damage. Constructed from durable metal with a low-friction plastic guide shoe, it weighs 0.253 kg. Choosing a genuine OEM timing chain tensioner ensures factory-specified spring rates, material quality, and precise fitment, which are essential for reliable engine timing and extended service life.