Genuine OEM Volkswagen Adjusting Washer, part number WHT011435K. This washer is used to adjust components within the differential assembly. It plays a critical role in ensuring proper gear meshing and smooth operation of the drivetrain. Located within the differential housing, it helps set the correct pre-load and backlash for the gears. The precise thickness and material of this genuine OEM part are crucial for maintaining the integrity and performance of the differential. Genuine OEM adjusting washers ensure exact tolerances for vibration-free service life and optimal power transfer.