BMW X5 E70 LCI X6 E71 EGR Valve Cooler N57 Diesel 8507334 8509116

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW X5 E70 LCI X6 E71 EGR Valve Cooler is an original exhaust gas recirculation system component designed for BMW N57 series diesel engines. Engineered as part of the factory system, the cooler ensures stable engine operation, supports exhaust emission control, and helps maintain proper thermal parameters of the engine. As a result, it serves as a precisely fitted service solution for demanding owners of X5 and X6 models.

Specifications and technical data

• SKU: 8509116
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8509116
• Substitutable numbers: 11618509116, 8509116, 8507334
• Fuel type: Diesel
• Category: EGR Parts & Valves

Function and role of the EGR cooler

The EGR cooler in a diesel engine is responsible for lowering the temperature of exhaust gases directed back to the intake manifold. Cooled exhaust gases help reduce the formation of nitrogen oxides, stabilize the combustion process, and support engine operation across a wide range of loads. In practice, this translates into more predictable engine characteristics and compliance with emission requirements.

Designed for the N57 Diesel engine

The presented EGR cooler has been developed specifically for N57 units in the facelifted BMW X5 and X6. This ensures the preservation of factory flow geometry, appropriately selected heat exchange surface area, and compatibility with the original EGR valve and engine accessories. Such a fit minimizes the risk of installation issues and allows for maintaining the integrity of the entire exhaust gas recirculation system.

Benefits of using an original EGR cooler

Using an original exhaust gas cooler in the EGR valves and parts category allows you to maintain engine performance at the levels intended by the manufacturer. A properly functioning EGR system reduces knocking under high loads, stabilizes the temperature in the combustion chamber, and decreases the risk of excessive thermal stress on engine components. This is particularly important in powerful diesel engines used in both city traffic and on long-distance routes.

Component condition and service application

The offered EGR cooler is a used part intended for service applications in BMW X5 and X6 vehicles with diesel engines. It is a practical solution for users who want to restore the efficiency of the exhaust gas recirculation system while maintaining the factory design of the component. Replacing a worn or leaking cooler with an original part of this type helps reduce the risk of leaks, EGR-related errors, and improper engine operation.

Technical support and part selection

The EGR cooler is associated with specific part numbers and interchangeable numbers, which facilitates clear identification of the component when selecting it for a specific vehicle. Before purchasing, it is worth verifying compatibility with the engine code and model version to ensure full compatibility with the existing EGR system and engine bay installation.

If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other components from the same group, such as exhaust gas coolers, EGR valves, or recirculation hoses, check out the available parts in the BMW EGR valves and parts category.

To better understand the specifics of BMW diesel units and consciously plan your EGR system service, it is worth reading an article comparing popular engines – you can find a detailed breakdown in the material BMW N47 vs M57 / M57N / M57N2 – a ranking of legendary diesels.