BMW E87 LCI E90 120i 320i N43 170HP ECU Kit Engine DME 7580279 CAS3 Key Manual

BMW E87 LCI E90 120i 320i N43 170HP ECU Kit Engine DME CAS3 Key Manual is a specialized electronic control module designed for petrol engines paired with a manual transmission. This component from the Electronic control modules and ECUs category is responsible for precise engine management, ensuring stable performance, correct throttle response, and proper integration with other vehicle systems.

Specifications and technical data

• SKU: 7580279-14
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7580279
• Substitutable numbers: 12147599881, 7599881, 12147580279, 7580279, 12147640015, 7640015, 12147621178, 7621178, 5WK93637, 61356943834, 6943834
• Fuel type: Petrol
• Gearbox type: Manual
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The DME engine controller used in BMWs with the N43 engine is responsible for comprehensive control of the combustion process in the petrol unit. As an Engine Control Unit, it analyzes signals from sensors, selects the fuel dose, ignition timing, and operating parameters of the auxiliary equipment so that the engine runs in a stable and predictable manner. In combination with a manual transmission, it enables smooth torque transfer and proper operation of systems responsible for drivetrain refinement.

The module is designed as an OEM BMW component, which means it is compliant with the vehicle's factory electrical and logical architecture. This ensures compatibility with the wiring harness, electrical installation, and other control units within the vehicle's network.

Benefits of using an original ECU module

Using an original engine controller in a BMW E87 LCI 120i with an N43 unit allows for the restoration of correct drivetrain performance parameters after a failure or improper interference with the electronics. The module from this series is adapted to support petrol engines, which is crucial for the correct control of the air-fuel mixture and ignition system. In combination with a manual transmission, it ensures consistent operation of functions responsible for throttle response and idle stability.

In practice, this means, among other things:

• maintaining factory engine control logic,
• proper cooperation with sensors and actuators,
• possibility of diagnostics in accordance with factory service procedures,
• reducing the risk of errors resulting from the use of unsuitable replacements.

Condition, fitment, and installation aspects

The offered controller belongs to the group of used electronic control modules, which in practice means it has been removed from a vehicle and is intended for reuse after appropriate preparation and adaptation in the vehicle. In the case of ECU modules, it is crucial to match the specific petrol engine configuration and transmission type; therefore, before installation, it is recommended to verify compatibility with the vehicle and plan any necessary programming or coding procedures.

Due to the nature of the electronic component, installation should be carried out by a workshop with experience in working with BMW engine control systems, access to appropriate diagnostic software, and knowledge of adaptation procedures. This helps to minimize the risk of communication errors in the vehicle network and ensures stable operation after replacement.

Application in the BMW drivetrain

In BMW 1 Series E87 LCI generation cars with the N43 engine, the DME controller plays a central role in managing the powertrain. It works with crankshaft, camshaft, temperature, airflow sensors, and other components to maintain the proper operating characteristics of the petrol engine. In a configuration with a manual transmission, it is also responsible for the correct control maps depending on load and driving conditions.

For the user, this means the ability to restore proper engine operation after damage to the original controller, eliminate errors related to incorrect ECU communication, and maintain consistency with the vehicle's other electronic systems.

Related categories and technical materials

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 control modules, ECU units, or auxiliary controllers, check out the available parts in the BMW electronic control modules and ECUs category.

For a better understanding of how original control modules affect the vehicle's character and road behavior, it is worth reading a blog article dedicated to the Audi brand – many of the principles described there regarding the selection and role of electronics also apply to BMW: Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.