Genuine OEM Audi Radial Shaft Seal, part number 02X409400A. This radial shaft seal is designed to prevent the leakage of lubricants from rotating shafts within the transmission or drivetrain assembly. It is a critical component for maintaining the integrity of the gearbox and ensuring smooth operation. This part is located within the transmission housing. It is typically made of rubber or a similar elastomeric material with a metal reinforcement. Genuine OEM seals are manufactured to exact tolerances to provide a reliable barrier against fluid loss and contamination.