Genuine OEM Volkswagen Vacuum Hoses, part number 03L131055DG. These hoses are integral to the vehicle's vacuum system, used to control various actuators and valves within the emissions control system. They are designed to withstand engine bay temperatures and maintain their integrity under vacuum pressure. Located within the engine bay, these hoses connect various components to regulate air and fuel mixture. Genuine OEM vacuum hoses are manufactured to strict tolerances for reliable and leak-free operation.