BMW F20 F21 F30 F31 LCI EGR Cooler Exhaust Cooler Diesel B47 8596444 8513132

BMW F20 F21 F30 F31 LCI EGR Cooler Exhaust Cooler Diesel B47 is a factory-original exhaust gas recirculation system component designed for facelifted BMW F-series diesel engines. It is responsible for the controlled return of a portion of exhaust gases to the intake and their efficient cooling, which supports maintaining the correct operating parameters of the B47 unit and reducing emissions. This solution helps maintain stable engine performance, proper combustion characteristics, and compliance with environmental standards.

Specifications and technical data

• SKU: 8513691
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8596444
• Substitutable numbers: 11718513691, 8513691, 8596444, 11718513132, 8513132
• Fuel type: Diesel
• Category: Other Exhaust & Emission Parts

Purpose and function in the EGR system

The presented EGR valve with exhaust cooler is dedicated to BMW 1 Series F20/F21 and 3 Series F30/F31 LCI models with the B47 diesel engine. This assembly combines a controlled recirculation valve and a heat exchanger in a single housing, ensuring that the exhaust gas flow is not only metered but also properly cooled before being reintroduced into the intake manifold.

This solution allows for:

• reducing the temperature of exhaust gases directed to the intake,
• lowering nitrogen oxide (NOx) emissions,
• maintaining stable combustion conditions in the diesel engine,
• better integration with the exhaust aftertreatment system and control electronics.

Construction of the EGR valve + exhaust cooler assembly

The component is a compact module mounted in the engine bay, integrating exhaust flow channels, a cooling section, and the valve control mechanism. This design reduces the number of connections and hoses, which promotes system tightness and facilitates maintenance. Original BMW manufacturing ensures a proper fit for the B47 unit and compatibility with the factory engine control unit software.

A properly functioning EGR module with a cooler contributes to:

• correct operation at idle and under partial load,
• reduction of smoke during acceleration,
• reduced risk of overheating components in the exhaust area,
• stable cooperation with the turbocharger and diesel particulate filter (DPF).

Benefits of using an original BMW component

Choosing an original EGR module with exhaust cooler for BMW F20, F21, F30, and F31 allows you to maintain factory engine performance and avoid fitment issues often encountered with aftermarket replacements. Precise fitment with the exhaust and intake system reduces the risk of leaks, and compliance with factory ECU maps facilitates adaptation after installation.

The main advantages of using this component include:

• maintaining the torque characteristics designed by the manufacturer,
• lower risk of engine control unit errors related to exhaust gas recirculation,
• better cooperation with the OBD onboard diagnostic system,
• maintaining compliance with technical inspection requirements regarding emissions.

Product characteristics and condition

The offered component comes from the BMW group and is part of the original system factory-installed in vehicles with the B47 engine. The product is in used condition, which allows for an economical repair of the EGR system while maintaining the original technical specifications. This type of solution is particularly attractive for vehicles in intensive use, where reasonable service costs are important while maintaining proper engine operation.

Due to the integrated design of the valve and exhaust cooler, replacing the entire module is often faster and more predictable than attempting to regenerate individual sub-components, which reduces vehicle downtime and facilitates workshop planning.

Related components and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional control modules, intake system elements, or engine accessories, check the available parts in the Other BMW category.

When working with advanced power units, it is also worth expanding your knowledge about the structural differences between standard and sports versions – in this context, an article describing the characteristics of engines, brakes, and chassis in RS models may be helpful, available at the link Audi RS vs other models – what is hidden under the hood and chassis?.