BMW E90 E91 LCI F10 F20 F30 Diesel N47N EGR Cooler Exhaust 7810751

BMW E90 E91 LCI F10 F20 F30 Diesel N47N EGR Cooler Exhaust is an original exhaust gas recirculation component designed for BMW diesel engines. Engineered for a specific engine family, this EGR cooler ensures stable operating conditions for the diesel engine and helps maintain compliance with exhaust emission standards. It is the ideal solution for users who expect proven compatibility, proper EGR system operation, and the preservation of factory engine performance parameters.

Specifications and technical data

• SKU: 7810751-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7810751
• Substitutable numbers: 11717810751, 7810751, 11717810871, 7810871, 11717805447, 7805447
• Fuel type: Diesel
• Category: Other Exhaust & Emission Parts

Purpose and function in a diesel engine

The presented EGR cooler is a component of the exhaust gas recirculation system in a Diesel engine, used in popular BMW F10, F20, F30, as well as E90 and E91 models equipped with the N47N unit. Its task is to lower the temperature of exhaust gases redirected to the intake manifold, which contributes to the reduction of nitrogen oxides and more stable engine operation across a wide range of loads.

Selecting the correct EGR cooler is important for:

• maintaining the proper operation of the EGR valve and engine control,
• reducing the risk of overheating components in the engine bay,
• preserving factory exhaust emission parameters.

Compatibility and technical markings

This item belongs to the group of original BMW components, which facilitates matching it to a specific vehicle configuration. The cooler has an assigned OEM part number and associated interchangeable numbers, allowing it to be precisely verified against the manufacturer's catalog or service documentation without the risk of selecting the wrong variant.

Before purchasing, it is recommended to compare the markings with the currently installed component or with data in the VIN system to confirm full compatibility with your specific N47N engine version and BMW model.

Performance characteristics and installation

The EGR cooler is a component that operates under demanding thermal conditions, which is why maintaining proper exhaust flow and system tightness is essential. Replacing a worn-out cooler with a functional unit helps reduce typical EGR failure symptoms, such as unstable idle, power loss, or the appearance of exhaust emission-related errors.

The product is offered in used condition, which provides a cost-effective solution while maintaining the manufacturer's original specifications. Installation in a specialized service center is recommended, including a check of the cooling system's tightness and the correct connection of exhaust and coolant hoses.

Application in service and EGR system upgrades

Replacing the EGR cooler is often part of a broader scope of work on the exhaust gas recirculation system in BMW diesel engines. In service practice, it is combined with checking the EGR valve, vacuum lines, cooling hoses, and engine control unit diagnostics. This helps restore the proper operation of the engine and reduces the risk of recurring faults.

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 EGR valves, recirculation hoses, or intake system parts, check out the available parts in the Other BMW category.

Technical support and additional knowledge

When working with advanced power units, it is worth using reliable sources of information regarding structural differences between individual engine versions and auxiliary systems. To compare solutions used in sports designs versus standard variants, the material describing the construction of units, cooling systems, and brakes in high-performance cars may be helpful – you can find it in the article Audi RS vs other models – what is hidden under the hood and chassis?.

If you are also interested in the topic of selecting other used OEM components, such as LED headlights or Xenon ballasts in premium cars, it is worth reading the guide See more and better – a complete guide to selecting and replacing used LED and Xenon headlights, which shows how to consciously choose original parts in the premium segment.