Genuine OEM Volkswagen Constant Velocity Joint Seal, part number 8K0521142A. This seal is designed to protect the constant velocity joint from dirt, water, and other contaminants while also retaining the necessary lubrication within the joint. It is a critical component for the longevity and smooth operation of the drivetrain. The seal is made from durable, flexible rubber compounds that can withstand the stresses of rotation and suspension movement. Genuine OEM seals ensure the correct fit and sealing properties to prevent premature wear of the CV joint.