Genuine OEM Audi Vacuum Hose Assembly, part number 03L131055DC. This intricate hose assembly is designed to convey precise vacuum pressure to various engine components, facilitating critical functions like brake boosting, emissions control, and turbocharger regulation. Its complex routing and multiple connections are essential for proper system operation. Opting for a genuine OEM vacuum hose ensures exact fitment, correct material composition for pressure resistance, and reliable long-term performance, preventing leaks and system malfunctions.