Audi A6 C8 A7 4G Q7 4M EGR Line Pipe Hose Tube 3.0 Diesel 059131525EG

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A6 C8 A7 4G Q7 4M EGR Line Pipe Hose Tube 3.0 Diesel is an original part from the EGR valves and parts group, designed for exhaust gas recirculation systems in Audi diesel engines. The precise geometry of the pipe ensures stable exhaust gas flow within the EGR circuit, which supports the proper operation of the engine unit and reduces the risk of leaks. This solution is dedicated to users who expect to maintain the factory performance parameters of the exhaust and emission control system.

Specifications and technical data

• SKU: 059131525EG
• Mark: Audi
• Condition: Used
• OEM Part Number: 059131525EG
• Substitutable numbers: 059131525EG, 059 131 525 EG
• Fuel type: Diesel
• Part type: EGR Tube
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The EGR pipe in Audi A6 C8, A7 4G, and Q7 4M models with a Diesel engine is responsible for the controlled delivery of exhaust gases from the exhaust system to the intake manifold. A properly selected EGR pipe:

• stabilizes exhaust gas flow in the recirculation circuit,
• reduces local overheating of components adjacent to the EGR system,
• supports compliance with exhaust emission standards,
• ensures correct cooperation with the EGR valve and engine control unit.

By maintaining the factory geometry and diameter of the pipe, the engine controller can precisely execute programmed recirculation strategies, which translates into predictable engine unit behavior across the entire load range.

Benefits of using an original Audi EGR pipe

Using an original pipe from the EGR valves and parts group in an Audi A6 C8, A7 4G, and Q7 4M allows for maintaining the integrity of the entire intake and exhaust system. Key advantages include:

• Factory fitment to mounting points and adjacent components, without the need for modifications.
• Reduced risk of leaks at connections, which decreases the probability of engine controller errors.
• Stable operation of the exhaust gas recirculation system, supporting uniform mixture combustion.
• Better cooperation with other EGR system elements, such as the exhaust gas cooler or the valve itself.

For users who value the driving characteristics typical of Audi, maintaining the original architecture of the EGR system is important both from the point of view of durability and the engine's operating culture.

Characteristics of the used component

The offered EGR pipe is a used component, which allows for economical repair while maintaining the manufacturer's original specifications. This type of component is particularly attractive for advanced diesel systems, where geometry and fitment are more important than visual surface aspects. In practice, this means the possibility of restoring proper exhaust gas circulation without the need to invest in a new sub-assembly, while maintaining compliance with the factory design.

Integration with the Audi diesel engine system

In Audi diesel engines, such as the units used in the A6 C8, A7 4G, and Q7 4M, the EGR system is closely linked to injection maps, boost pressure, and exhaust gas temperature control. A functional EGR pipe:

• facilitates maintaining a stable temperature in the combustion chamber,
• limits the formation of nitrogen oxides through controlled exhaust gas intake,
• supports smooth transitions between different engine operating modes (city/highway/load),
• reduces the risk of entering limp mode related to recirculation system errors.

For workshops and users servicing the vehicle themselves, this means the ability to restore proper system operation without interfering with the controller software.

Expanding knowledge and selecting Audi parts

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as lines, pipes, or additional exhaust gas recirculation components, check the available parts in the Audi EGR valves and parts category.

To better understand how original components – including EGR system elements – influence the car's behavior and help maintain the brand's character, it is worth reading the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which discusses the importance of using original sub-assemblies in Audi vehicles.