Genuine OEM Audi Vacuum Tube With Check Valve, part number 1K0612041KD. This component is designed to maintain consistent vacuum pressure within a specific system, preventing vacuum loss and ensuring proper operation of vacuum-actuated devices. The integrated check valve allows one-way flow, crucial for system stability. Constructed from durable, vacuum-resistant materials, it provides a precise fit and reliable performance. Using a genuine OEM vacuum tube with check valve ensures correct pressure regulation and long-term system integrity.