BMW E70 E90 E91 E92 LCI F10 F11 N57 Exhaust Manifold EGR Gas Cooler 7805446

BMW E70 E90 E91 E92 LCI F10 F11 N57 Exhaust Manifold EGR Gas Cooler is an original exhaust gas recirculation system component designed for N57 engines in selected BMW 3 and 5 Series models. As part of the EGR Valves and Parts category, it is responsible for efficiently cooling exhaust gases redirected to the intake manifold, which contributes to stable engine operation and reduced emissions. This used OEM component allows for a technically correct replacement of a worn-out cooler without interfering with the factory design of the system.

Specifications and technical data

• SKU: 7805446
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805446
• Substitutable numbers: 7805446, 11717805446
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The EGR gas cooler in the N57 engine is responsible for lowering the temperature of exhaust gases before they are reintroduced into the combustion chamber. This allows the recirculation system to operate under stable thermal conditions, enabling the engine control unit to maintain proper mixture parameters and boost pressure. In BMW E90, E92 LCI, F10, and F11 models, the use of a dedicated EGR cooler is crucial for maintaining the correct operation of the diesel unit and compliance with emission standards.

Benefits of using an original exhaust gas cooler

Using a factory EGR gas cooler in the N57 engine ensures:

• Proper geometric fit to the intake and exhaust system without the need for modifications.
• Compatibility with the factory EGR valve and engine accessories in the specific BMW model.
• Properly calibrated exhaust cooling efficiency, consistent with engine control unit maps.
• The ability to maintain the stock performance parameters of the engine after replacing a worn component.

For the user, this means predictable vehicle behavior, reduced risk of control unit errors, and no need for system modifications.

Product characteristics and condition

The offered BMW EGR gas cooler belongs to the EGR Valves and Parts group and is a salvaged part. This used component allows for an economical repair of the exhaust gas recirculation system while maintaining the manufacturer's original specifications. Before installation, a standard workshop procedure is recommended, including checking the system for leaks, verifying the patency of exhaust channels, and ensuring proper connection of the hoses.

Selection and vehicle compatibility

To correctly select an EGR gas cooler for a specific BMW vehicle, it is worth verifying compatibility with the N57 engine designation and the body generation (E90, E92 LCI, F10, F11). It is also helpful to compare the shape of the housing, the arrangement of the ports, and the mounting points with the currently installed part. In case of doubt, it is best to consult the selection of parts with a mechanic or the store's technical department by providing the vehicle's details.

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 exhaust gas coolers, EGR valves, or recirculation pipes, check out the available parts in the BMW EGR Valves and Parts category.

Operation, diagnostics, and technical knowledge

A functional EGR gas cooler has a significant impact on the operation of a diesel engine – its leakage or clogging can lead to power loss, increased smoke, or the appearance of errors related to the recirculation system. When diagnosing EGR problems, it is worth paying attention to symptoms such as unstable idle, limp mode, or increased fuel consumption. If you need to replace other powertrain components, educational materials regarding used drivetrain elements may also be helpful, such as the article "Used gearbox – when is it worth it and what you need to remember", which discusses the practical aspects of selecting and operating used parts.

Summary

BMW E70 E90 E91 E92 LCI F10 F11 N57 Exhaust Manifold EGR Gas Cooler is a technically matched, used OEM component designed for the exhaust gas recirculation system in N57 engines. Choosing an original cooler from the EGR Valves and Parts group allows you to restore the correct operating parameters of the engine, reduce exhaust emissions, and maintain compliance with BMW's factory specifications, while simultaneously optimizing repair costs.