Genuine OEM Volkswagen Valve Spring, part number 06E109623N. This precision-engineered spring is responsible for closing the engine valves after they are opened by the camshaft, ensuring proper combustion chamber sealing. It is located on the valve stem within the cylinder head. Weighing 0.034 kg, this small but critical component is made from high-strength spring steel. Choosing a genuine OEM valve spring ensures correct spring rate, fatigue resistance, and durability, which are vital for reliable engine performance and longevity.