Genuine OEM Volkswagen Support Washer, part number 088409249D. This washer is a critical component within the differential assembly, providing precise spacing and support for gears and bearings to ensure smooth operation of the drivetrain. It is located within the rear axle differential. Manufactured from durable steel, it is designed to withstand the stresses of the drivetrain. Genuine OEM washers are manufactured to exact specifications for correct fit and optimal function within the differential.