Genuine OEM Volkswagen Valve Spring, part number 038109623D. This essential engine component is responsible for ensuring the precise and timely closure of engine valves, which is critical for maintaining proper compression and combustion. It is located in the cylinder head, around the valve stem. Weighing 0.0383 kg, this spring is manufactured from high-grade spring steel. Genuine OEM valve springs are engineered to exact tension and fatigue resistance specifications, preventing valve float or breakage and ensuring reliable engine operation.