Genuine OEM Audi Exhaust Camshaft Bearing Shell, part number 03G103652A. This precision-engineered component provides a low-friction surface for the exhaust camshaft to rotate within the cylinder head, ensuring accurate valve timing and smooth engine operation. It is an integral part of the engine's valvetrain assembly. Weighing approximately 0.017 kg, this bearing shell is manufactured to strict tolerances. Using genuine OEM bearing shells ensures factory specifications for fit and material composition, critical for the longevity and performance of the engine's rotating assemblies.