Genuine OEM Volkswagen Generator Spacer Ring, part number 06B903237. This small but critical component is designed to maintain precise spacing and alignment for proper operation of the generator assembly. It is installed as part of the generator mounting hardware. Weighing just 0.017 kg, its exact dimensions (25mm diameter, 5mm height) are crucial for correct fitment. Using a genuine OEM spacer ring prevents misalignment, reduces wear, and ensures the long-term reliability of the charging system.