Genuine OEM Audi Control Chain Guide Rail, part number 06H109469AP. This component is essential for guiding the engine control chain, maintaining proper tension and alignment during engine operation. It is typically located within the engine's timing assembly. Constructed from durable, low-friction plastic, it measures 0.324m in length and weighs 0.066 kg. Genuine OEM chain guide rails provide the exact material composition and dimensions for reliable chain tension and longevity, preventing premature wear.