Audi A4 B9 Q5 FY A6 C8 A7 C8 EGR Pipe Hose Line 2.0TDI Diesel Engine 05L131525A

Audi A4 B9 Q5 FY A6 C8 A7 C8 EGR Pipe Hose Line is an item from the EGR Valves and Parts category, designed for 2.0 TDI diesel systems. Engineered as an OEM component for selected Audi models, it ensures proper exhaust gas routing within the EGR cooler circuit, which translates into stable diesel engine operation and the maintenance of correct emission parameters.

Specifications and technical data

• SKU: 05L131525A
• Mark: Audi
• Condition: Used
• OEM Part Number: 05L131525A
• Substitutable numbers: 05L131525A, 05L 131 525 A
• Fuel type: Diesel
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The EGR cooler pipe in the version dedicated to 2.0 TDI units is responsible for the controlled delivery of exhaust gases between the EGR cooler and other components of the recirculation system. In vehicles such as the Audi A4 B9, Q5 FY, A6 C8, or A7 C8, it is crucial for:

• maintaining a stable temperature of exhaust gases directed for re-combustion,
• proper operation of the EGR valve and exhaust cooler,
• reducing nitrogen oxide emissions in diesel engines,
• maintaining the correct operating characteristics of the powertrain across the full load range.

Thanks to its proper shape and fitment to the exhaust and intake system, the pipe supports even exhaust gas flow, which is essential for both the durability of EGR components and the comfort of vehicle operation.

Compatibility with 2.0 TDI diesel engines

The pipe in question has been developed for modern 2.0 TDI diesel units used in newer generations of mid-size and premium Audi vehicles. The component's design is adapted to the engine bay architecture of these models, which facilitates installation and allows for maintaining the factory routing of the EGR system.

In practice, this means that with proper selection for a specific engine version and vehicle year, the pipe can be installed without the need to modify other components, preserving the original exhaust flow geometry and compatibility with factory mounts.

Characteristics of the used component

The EGR cooler pipe is offered as a used part, sourced from dismantling. This type of component, provided it remains airtight and free of mechanical damage, can still ensure stable EGR system performance. For exhaust pipes, it is particularly important to ensure:

• retention of proper geometry and absence of deformation,
• no cracks in zones exposed to high temperatures,
• intact sealing surfaces at connection points,
• the ability to be properly tightened to the mating system components.

A well-selected, used EGR pipe allows for reduced repair costs while maintaining compliance with the factory specifications of the exhaust gas recirculation system.

Benefits of using an original EGR pipe

Using an EGR cooler pipe from the same family of components as the factory Audi equipment translates into a number of practical benefits:

• Factory fitment – preservation of original mounting points and pipe routing in the engine bay.
• Consistency with other EGR system elements – the valve, cooler, and manifolds.
• Reduced risk of leaks resulting from improper fitment of aftermarket replacements.
• Maintenance of correct diesel engine operating parameters regarding emissions and exhaust gas temperature.

For users who want to restore full efficiency to the exhaust gas recirculation system without interfering with the vehicle's design, such an element is a practical and technically sound choice.

Selecting a used part and technical support

When choosing a used EGR cooler pipe, it is worth paying attention to compatibility with the specific engine version and vehicle year. It is helpful to compare the shape, placement of mounts, and type of connections with the element currently installed in the vehicle. For drivers considering whether a new or used part is a better solution, the tips included in the article Car parts – new or used? We compare costs, quality, and durability may be useful, where the differences in costs, durability, and availability of components are discussed.

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