Genuine OEM Volkswagen Fuel Tank Cap, part number 2HJ201550D. This cap seals the fuel tank opening to prevent fuel evaporation and contamination. It is essential for maintaining fuel system integrity and preventing emissions. The cap is designed for a precise fit and a secure seal. Genuine OEM fuel tank caps are manufactured with durable materials to ensure a long service life and proper sealing, preventing leaks and protecting the fuel from external elements.