EGR Valve Audi A4 S4 B6 B7 4.2 Engine Exhaust Cooler 078131102L

Audi A4 S4 B6 B7 4.2 Engine EGR Cooler Exhaust Valve is a component from the EGR Valves and Parts group, designed for the exhaust gas recirculation system in diesel engines. A properly selected exhaust cooler EGR valve helps maintain stable engine operating parameters, reduce exhaust emissions, and improve the smoothness of the engine's operation.

Specifications and technical data

• SKU: 078131102L
• Mark: Audi
• Condition: Used
• OEM Part Number: 078131102L
• Substitutable numbers: 078131102L, 078 131 102 L, 72256023
• Fuel type: Diesel
• Category: EGR Parts & Valves

Purpose and Function in the EGR System

The presented exhaust cooler EGR valve works with the engine to controllably direct a portion of the exhaust gases back into the combustion chamber. In engines powered by Diesel fuel, this is particularly important for reducing nitrogen oxides and stabilizing operating temperatures. A correctly functioning component from this group influences:

• maintaining correct exhaust emission parameters,
• stable engine operation across a wide range of loads,
• reducing the risk of overheating components in the exhaust system area.

Benefits of Using an Original Audi Part

Using a part from the Audi brand means maintaining the factory characteristics of the EGR system. The original geometry and precise fit of the connections facilitate installation and minimize the risk of leaks or installation errors. For the user, this means:

• consistency with factory engine control and ECU software,
• proper fit with the exhaust cooler and manifold,
• reduced risk of errors related to exhaust gas recirculation.

Component Characteristics and Condition

The offered exhaust cooler EGR valve is a used part with a condition marked as Used. This type of component is a good choice for servicing advanced units when you want to maintain the original design while optimizing repair costs. The product comes from disassembly, which allows for maintaining the factory specification without the need for structural modifications.

An additional advantage is the presence of available interchangeable numbers, which makes it easier to verify compatibility with a specific engine version and vehicle year. This information can be found in the technical specifications section, making it easier to match the part to your Audi A4 or S4 B6/B7 generation.

Selection and Compatibility in Service Practice

When selecting an exhaust cooler EGR valve for Audi A4/S4 B6/B7, it is crucial to compare the markings with the vehicle's documentation and the existing component. For this purpose, you can use:

• the OEM Part Number visible in the specifications,
• information about the fuel type to avoid confusion between engine versions,
• data from service catalogs or parts selection software.

This approach helps reduce the risk of purchasing an incompatible part and speeds up the repair process, especially for advanced, high-power units where the EGR system operates under demanding thermal conditions.

Why Choose a Used Exhaust Cooler EGR Valve?

For components like an exhaust cooler EGR valve, choosing a used OEM part is often a sensible compromise between cost and durability. The original design maintains factory flow and control parameters, while also allowing for cost savings compared to new aftermarket parts. If you want to better understand the differences between refurbishment and installing a part from disassembly, it's worth reading the article Refurbished or Used Original – Which Part to Choose for Repair?, which discusses practical examples from the aftermarket.

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other parts from the same group, such as control valves, recirculation modules, or EGR system hoses, check the available parts in the Audi EGR Valves and Parts category.