Audi A4 B9 A5 8F Q7 4M EGR Connecting Pipe Hose Line Tube 3.0 TDI 059131525FG

Audi A4 B9 A5 8F Q7 4M EGR Connecting Pipe Hose Line Tube 3.0 TDI is an original exhaust gas recirculation system component designed for Audi diesel engines. As part of the EGR Valves and Parts group, it is responsible for a tight and stable connection between system components, which directly impacts the engine's performance and exhaust emissions. Using an OEM component allows for a technically correct repair without the need for aftermarket replacements with uncertain parameters.

Specifications and technical data

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

Purpose and function in the EGR system

The EGR connecting pipe in the 3.0 TDI engine is responsible for the controlled flow of exhaust gases between the individual components of the recirculation system. A properly selected and sealed connector:

• stabilizes the operation of the EGR system under both low and high load conditions,
• reduces the risk of leaks resulting in power loss or limp mode,
• supports compliance with exhaust emission standards for diesel units,
• ensures proper operating conditions for the EGR valve and exhaust gas cooler.

In Audi vehicles with diesel engines, a properly functioning EGR connector is important for both performance parameters and the durability of other intake system components.

Benefits of using an original EGR connecting pipe

Using an original EGR connector in Audi A4, A5, and Q7 models with the 3.0 TDI unit allows for maintaining factory fitment and exhaust flow characteristics. Key advantages include:

• Precise fit with the exhaust and intake system – no need for modifications or adjustments.
• Geometry consistent with the manufacturer's design, which reduces stress and minimizes the risk of cracks during operation.
• Flow parameters adapted to the engine control unit maps, which promotes stable operation of the diesel unit.
• Ability to use existing mounting points and seals in the vehicle.

The used OEM element is a good solution for repairs where maintaining the original EGR system design at reasonable service costs is a priority.

Product characteristics and condition

The offered EGR connecting pipe comes from dismantling and is classified as a used product. This means that the element has signs of wear typical for parts working in an exhaust system, but it is intended for further use after proper installation. This type of component is worth choosing when:

• the existing connector has cracked, deformed, or corroded,
• there are leaks in the EGR system causing control unit errors,
• it is necessary to replace several exhaust gas recirculation system components as part of a single repair.

Thanks to the preservation of the original design, the installation proceeds in a predictable manner, and the risk of fitment issues is limited.

Selection and application in diesel engines

The EGR connecting pipe has been designed to work with Diesel power units, which is significant due to specific operating conditions (high exhaust temperature, presence of soot, variable pressures). When selecting the part, it is worth paying attention to:

• compatibility with the specific version of the 3.0 TDI engine in a given Audi model,
• the type of EGR system used and the layout of components in the engine bay,
• compatibility with existing hoses, valves, and the exhaust gas cooler.

A properly selected EGR connector helps reduce power drops, smoke, and frequent warning lights related to exhaust emissions.

Expanding the EGR system in Audi

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 recirculation hoses, connectors, or additional connecting sections, check the available parts in the Audi EGR Valves and Parts category.

More about the cost-effectiveness of used parts

When planning repairs of the EGR system and other engine subassemblies, it is worth considering a broader approach to using components from dismantling. You can read about the economic aspects of operating VAG group cars and when used subassemblies can be a reasonable alternative to new service parts in the article: VW brand cars: economically restoring full efficiency thanks to parts from professional dismantling.