BMW E60 E87 E90 E91 M47N2 M57N2 EGR Exhaust Gas Cooler 7790065

BMW E60 E87 E90 E91 M47N2 M57N2 EGR Exhaust Gas Cooler is an original exhaust gas recirculation system component designed for BMW diesel engines, supporting the proper operation of the EGR system and the stabilization of exhaust gas temperatures. Thanks to its factory OEM design, the cooler ensures proper cooling of gases before they are reintroduced into the manifold, which helps maintain engine efficiency and reduce emissions. This solution is particularly beneficial for EGR system repairs in popular BMW 1, 3, and 5 series models.

Specifications and technical data

• SKU: 7794245
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7794245
• Substitutable numbers: 11717794245, 7794245, 7790065
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The presented exhaust gas cooler is a component from the EGR valves and parts category, responsible for lowering the temperature of exhaust gases directed back into the combustion chamber. In M47N2 and M57N2 engines, the use of a dedicated EGR cooler allows for:

• stabilization of exhaust gas temperature across a wide range of engine loads,
• reduction of nitrogen oxide formation through more efficient recirculation,
• reduction of thermal load on engine auxiliary components,
• maintaining proper EGR control operation in both city and highway driving conditions.

A properly selected exhaust gas cooler also supports the smooth operation of the power unit, which translates into more predictable throttle response and stable performance parameters.

Construction and advantages of the original BMW solution

The original BMW exhaust gas cooler has been designed for the specific architecture of M47N2 and M57N2 engines, ensuring a proper fit with the manifold, EGR valve, and cooling system. The OEM design means:

• preservation of factory mounting points and hose routing,
• compatibility with standard EGR control in BMW E60, E87, and E90 models,
• heat exchange surface area properly matched to the characteristics of these power units.

As a result, installation is predictable for the mechanic, and the risk of fitment issues is limited compared to aftermarket replacements. The factory OEM design also helps maintain compliance with the manufacturer's specifications regarding emissions and engine operating parameters.

Condition, application, and service aspects

The exhaust gas cooler comes from the BMW range and is offered as a used component, allowing for an economical repair of the EGR system while maintaining the original specification. In practice, this is a beneficial solution in situations where the existing cooler has developed leaks, become clogged, or suffered mechanical damage.

Before installation, a standard service procedure is recommended, including checking the patency of channels, the tightness of connections, and the condition of the cooperating EGR valve. A properly selected and installed exhaust gas cooler helps reduce the risk of ECU errors related to exhaust gas recirculation and supports maintaining a stable operating temperature for the power unit.

Benefits of choosing an original BMW exhaust gas cooler

Choosing an original exhaust gas cooler for the EGR system in BMW E60, E87, and E90 models offers a number of practical benefits:

• Consistency with the factory design – maintaining the original exhaust gas flow and cooling characteristics.
• Better predictability of EGR system operation compared to random aftermarket replacements.
• Reduced risk of leaks resulting from inaccurate fitment.
• Possibility of economical repair through the use of a used OEM component.

If you want to maintain the factory engine performance parameters and proper exhaust gas recirculation operation, the original BMW EGR exhaust gas cooler is a solution that allows you to strike a balance between cost and quality.

EGR system expansion 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 EGR valves, hoses, or modules cooperating with exhaust gas recirculation, check out the available parts in the BMW EGR valves and parts category.

To better understand the importance of original components in the exhaust gas recirculation system and the differences between OEM parts and replacements, it is worth reading the article Quality assurance and OEM safety – why used original car parts are the best choice for your vehicle?, which discusses in detail the issues of quality, safety, and cost-effectiveness of using original components in BMW vehicle repairs.