Genuine OEM Volkswagen Valve Spring, part number 04L109633A. This precision-engineered spring is essential for closing the engine valves, ensuring proper combustion chamber sealing and engine compression. It is located within the cylinder head, surrounding the valve stem. Weighing only 0.0228 kg, it measures 0.045m in length. Opting for a genuine OEM valve spring guarantees the correct spring rate, material fatigue resistance, and precise dimensions for optimal engine performance and longevity.