Genuine OEM Audi Camshaft Control Chain Slide Rail, part number 03F109509C. This engine component is specifically designed to guide and support the camshaft control chain, maintaining its proper tension and alignment for accurate valve timing. It is located within the engine's timing assembly. Weighing approximately 0.113 kg, this rail is constructed from durable materials to withstand the demanding conditions of the engine. Using a genuine OEM slide rail ensures precise fitment and material integrity, crucial for the long-term reliability and performance of the engine's valvetrain.