EGR Valve Audi A4 B8 A5 8T 2.0 TDI Diesel Engine Exhaust Cooler 03L131512AH

The Audi A4 B8 A5 8T 2.0 TDI EGR Cooler is an original exhaust gas recirculation system component designed for 2.0 TDI diesel engines. Thanks to its factory design, it ensures proper EGR system operation, stable exhaust gas temperature, and compliance with emission requirements in modern Audi diesel units.

Specifications and technical data

• SKU: 03L131512AH
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L131512AH
• Substitutable numbers: 03L131512AH, 03L 131 512 AH
• Fuel type: Diesel
• Category: EGR Parts & Valves

Purpose and Function in the EGR System

The presented EGR cooler with valve belongs to the EGR Valves and Parts category and is used in Diesel engines fitted in Audi A4 B8 and Audi A5 8T models with the 2.0 TDI unit. The component is responsible for the controlled redirection of a portion of exhaust gases back to the intake manifold and their prior cooling, which reduces combustion temperature and contributes to the reduction of nitrogen oxides.

The combination of a cooler and valve in a single assembly allows for:

• precise control of exhaust gas flow under various engine load conditions,
• maintaining a stable temperature of exhaust gases directed to the intake,
• preserving the correct operating characteristics of the 2.0 TDI unit under driving conditions.

Benefits of Using an Original Audi Component

The original design intended for a specific Audi diesel engine family ensures proper fitment with the intake system, cooling system, and engine control. As a result:

• compliance with factory engine control unit maps is maintained,
• the risk of diagnostic errors related to EGR operation is reduced,
• combustion parameters specified by the manufacturer are preserved.

The use of an original EGR cooler and valve assembly is particularly important in diesel engines, where stable operation of the exhaust gas recirculation system affects running smoothness, fuel consumption, and emission levels.

Performance and Installation Characteristics

The component is designed for Diesel-powered vehicles, meaning it is adapted to higher exhaust gas temperatures and the specific operating conditions of TDI units. The EGR cooler and valve assembly is designed as a replacement part for the factory component, which facilitates servicing and reduces replacement time.

In workshop practice, replacing the complete EGR cooler and valve assembly allows for:

• resolving issues related to leaks or seized valves,
• restoring proper exhaust gas flow and cooling in the system,
• minimizing the risk of recurring faults resulting from partial regeneration of worn components.

Condition, Origin, and Service Application

The product comes from the Audi brand offering and is designated as a used original part. For many users and workshops, this represents a favorable compromise between repair cost and maintaining factory quality. This type of part is frequently used for:

• repairs of the exhaust gas recirculation system after EGR error codes appear,
• servicing of 2.0 TDI units with mileage where the EGR system has naturally worn out,
• restoring full vehicle functionality after an exhaust cooler failure.

Related Categories and Technical Knowledge

If you are looking for other Audi EGR Valves and Parts for your car, check out the Audi EGR Valves and Parts available in our store to select the appropriate component for your specific engine version.

For those interested in the broader context of car modifications and upgrades, including the use of salvaged parts, we recommend an article on our blog: Eco-tuning in practice – how to increase performance while reducing your carbon footprint with recycled parts. Meanwhile, MINI enthusiasts might be interested in the post MINI John Cooper Works – what sets it apart and how to upgrade your MINI, which shows how to consciously select used components for tuning.