Genuine OEM Volkswagen Valve Spring Retainer, part number 022109641B. This small but critical component is designed to secure the valve spring in its correct position, ensuring proper valve opening and closing cycles within the engine. It is installed at the top of the valve spring in the cylinder head. Crafted from durable metal, this circular retainer measures approximately 20mm in diameter and 6mm in height. Using a genuine OEM valve spring retainer guarantees the correct material strength and precise dimensions, which are essential for maintaining valve train stability and preventing catastrophic engine damage.