Genuine OEM Audi Engine Timing Chain Guide, part number 07P109514D. This critical component is installed within the engine's timing assembly, where it guides the timing chain, ensuring its proper alignment and smooth movement. It helps to maintain correct valve timing and prevent chain slack or excessive wear. The guide measures approximately 0.196 meters in length and weighs 0.0609 kg. Using a genuine OEM timing chain guide ensures the correct material hardness and surface finish for minimal friction and wear, precise dimensions for proper chain tension, and reliable operation, which is vital for the engine's synchronization and overall longevity.