Genuine OEM Volkswagen Additional Heater, part number 1K0815071AH. This component is designed to provide supplemental heat to the vehicle's interior, enhancing passenger comfort, especially in colder climates. It works in conjunction with the main heating system to ensure optimal cabin temperature. The part is located at position 1 in the diagram. Genuine OEM parts are crucial for additional heaters to ensure correct heat output, efficient operation, and safe integration with the vehicle's existing systems.