Genuine OEM Audi Timing Chain Guide Rail, part number 06M109229AC. This component is crucial for maintaining proper tension and guiding the engine's timing chain, ensuring its smooth and consistent operation. It is an integral part of the timing chain assembly, preventing excessive slack and wear on the chain. Constructed from durable, low-friction material, it weighs approximately 0.38 kg and measures 0.115m in length, 0.115m in width, and 0.01m in height. An authentic OEM timing chain guide rail ensures precise dimensions and material properties, which are critical for accurate valve timing, reducing noise, and extending the lifespan of the entire timing system.