Genuine OEM Audi Manual Transmission Adjusting Washer, part number 02B409210L. This precision-engineered washer is a critical component within the manual transmission, designed to provide accurate spacing and adjustment for optimal gear engagement and smooth operation. Weighing 0.014 kg and with a diameter of 0.074m, its exact thickness and material properties are vital for maintaining factory tolerances. Using a genuine OEM adjusting washer ensures the correct dimensions and hardness, preventing premature wear and ensuring the long-term reliability and performance of the transmission.