BMW 1 3 Series E81 E87 LCI E90 116i 316i N45N ECU Kit DME 7567321 + CAS3 + Key

BMW 1 3 Series E81 E87 LCI E90 116i 316i N45N ECU Kit DME + CAS3 + Key is an original electronic control module designed for N45N engines in 1 and 3 Series models, ensuring precise engine management. This component from the Electronic control modules and controllers category is responsible for key powertrain functions, influencing performance, operational smoothness, and safety. Thanks to its factory design, the ECU maintains full compatibility with BMW's electrical architecture, facilitating diagnostics and integration with other vehicle systems.

Specifications and technical data

• SKU: 7567321-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7567321
• Substitutable numbers: 12147567321, 7567321, 61356943834, 6943834, 12147591162, 7591162, 12147591163 12147585435 12147585249, 12147581848, 12147582242 12147581610 12147557951, 12147581609, 7591163 7585435 7585249 7581848, 7582242 7581610 7557951 7581609, 0261201553, 0 261 201 553
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented ECU is dedicated to N45N petrol engines used in BMW E87 and E90 series in 116i and 316i versions. As the central module managing engine operation, the controller oversees, among other things, fuel injection, ignition timing, auxiliary equipment operation, and communication with other onboard modules. Using an original controller allows you to maintain the driving characteristics typical of BMW – predictable throttle response, stable idle speed, and consistency with factory control maps.

Benefits of using an original BMW ECU

Choosing an original electronic control module provides a number of practical benefits in daily operation:

• Full integration with the electrical system – the controller is structurally matched to BMW wiring harnesses, sensors, and other modules, which reduces the risk of communication errors.
• Stable powertrain operation – maintaining factory engine control parameters promotes smooth engine performance and predictable power delivery.
• Simplified diagnostics – compatibility with factory service procedures and BMW diagnostic testers allows for faster troubleshooting.
• Adaptation and coding capabilities – the controller is suitable for professional adaptation to a specific vehicle according to the manufacturer's procedures.

Condition, verification, and practical application

The module comes from the secondary market, which allows for lower repair costs while maintaining a design consistent with the factory BMW standard. Before installation, it is recommended to perform a full vehicle diagnostic and verify the compatibility of the controller with the specific car configuration, as well as prepare it for operation (e.g., through appropriate coding or programming according to service procedures). This approach minimizes the risk of improper powertrain operation and allows you to fully utilize the potential of the installed ECU.

Selection and compatibility within the controller group

The ECU belongs to the Electronic control modules and controllers group, where individual references may appear in many hardware and software variants. When selecting, it is worth paying attention to:

• compatibility with the engine type (N45N) and vehicle generation (E87, E90),
• vehicle equipment configuration (e.g., safety systems, transmission, comfort systems),
• possibilities of adapting the controller to a specific VIN in a specialized service center. This approach helps avoid communication problems on the data bus and errors in the operation of related systems.

Substantive support and knowledge development

For users interested in a broader context of using original electronic modules in premium cars, an article describing how to preserve the brand's character through proper parts selection may be helpful. You can find more on this topic in the material: Audi and emotions in their purest form – how used parts help maintain the brand's DNA, which clearly shows the importance of original components in modern designs. If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as engine controllers, comfort modules, or safety system management units, check out the available parts in the BMW electronic control modules and controllers category.