Audi A6 C7 EGR Vacuum Hose Pipe Tube Line 2.0 TDi Diesel CGLC 03L131552AS

Audi A6 C7 EGR Vacuum Hose Pipe Tube Line 2.0 TDi Diesel CGLC is a component from the Lines, hoses and pipes group, designed for the exhaust gas recirculation system in a diesel engine. It is responsible for the stable routing of the vacuum that controls the EGR valve, which translates into predictable engine performance and proper cooperation with the engine electronics. This is a practical service solution for Audi A6 C7 diesel owners who want to restore the proper operation of the EGR system.

Specifications and technical data

• SKU: 03L131552AS
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L131552AS
• Substitutable numbers: 03L131552AS, 03L 131 552 AS
• Fuel type: Diesel
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and function in the EGR system

The EGR vacuum hose in the Audi A6 C7 with the 2.0 TDI CGLC engine operates within the exhaust gas recirculation valve control area. Its task is to precisely transmit vacuum from the control system to the actuator, which enables smooth opening and closing of the EGR valve. As a result, the engine control unit can maintain the correct mixture proportions, reduce exhaust emissions, and ensure stable operation of the diesel unit. A functional vacuum hose has a direct impact on:

• proper operation of the EGR valve across the full load range,
• maintaining the correct pressure in the intake system,
• reducing the risk of the engine entering limp mode,
• stability of diesel engine performance parameters during acceleration and steady-speed driving.

Technical characteristics and fitment

The hose has been designed as a component dedicated to the specific 2.0 TDI CGLC engine configuration in the Audi A6 C7, which ensures proper vacuum routing and compatibility with factory ports and connectors. Proper geometric fitment reduces stress, minimizes the risk of chafing and leaks, and facilitates installation in the engine bay. As a part from the Lines, hoses and pipes group, this component is adapted to work in high-temperature environments and variable pressure conditions typical for diesel units. The construction of the hose allows it to maintain flexibility while retaining adequate wall rigidity, which is essential for vacuum stability in the EGR system.

Product condition and service application

The offered EGR vacuum hose is a used part, making it a reasonable choice for maintenance repairs where functionality and compliance with the factory solution are the priority. Original Audi origin helps maintain performance parameters close to factory assembly, without the need for adaptation or modification of the installation. Replacing the hose is recommended in situations where symptoms such as unstable idle, power loss, EGR-related errors, or visible mechanical damage to vacuum lines occur. Using a dedicated component helps restore correct vacuum values and reduce the risk of secondary faults in the intake system.

Benefits of using a dedicated vacuum hose

Using an EGR vacuum hose matched to the Audi A6 C7 diesel engine brings a number of practical service benefits:

• preservation of the factory EGR system operating characteristics,
• reduced risk of leaks in the vacuum circuit,
• better stability of combustion parameters in the diesel unit,
• reduction of diagnostic errors related to exhaust gas recirculation. Precise fitment for the specific model and fuel type facilitates the mechanic's work, shortens installation time, and reduces the risk of incorrect hose routing in the engine bay.

Expanding the scope of repairs within the vacuum system

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as vacuum lines, flexible hoses, or rigid supply pipes, check out the available parts in the Audi lines, hoses and pipes category. To broaden your knowledge about the design differences between model generations and the importance of original components in maintaining the vehicle's character, it is worth reading the article Classic Mini vs modern MINI – how the design has changed and what original Mini parts help preserve their character, which shows how important the selection of the right OEM parts is in the long term of operation.