BMW E87 LCI E90 120i 320i N43 170HP ECU Engine Control Unit DME Manual Gearbox

BMW E87 LCI E90 120i 320i N43 170HP ECU Engine Control Unit DME Manual Gearbox is an original electronic control module designed for N43 petrol engines with 170 HP, paired with a manual transmission. This engine control unit from the Electronic control modules and controllers category ensures precise management of the powertrain, including fuel delivery, ignition, and protection strategies. It is a solution for BMW 1 Series E87 LCI and 3 Series E90 owners who need a proven DME ECU matched to a manual configuration.

Specifications and technical data

• SKU: 7580279-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7580279
• Substitutable numbers: 12147599881, 7599881, 12147580279, 7580279, 12147640015, 7640015, 12147621178, 7621178, 5WK93637
• Fuel type: Petrol
• Gearbox type: Manual
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the controller

The Engine Control Unit is responsible for the comprehensive management of the N43 petrol engine, adapted for 170 HP. The module monitors key engine operating parameters, such as injection timing, ignition advance angle, auxiliary system operation, and safety strategies, which translates into stable performance and predictable throttle response.

The version intended for manual transmission works with drivetrain control logic adapted for manual gear shifting, which is essential for the proper functioning of features such as idle speed control, clutch engagement response, and load-based adaptations.

Compatibility and replacement numbers

The offered controller belongs to the BMW DME ECU group used in E87 LCI 120i and E90 320i models with the N43 engine. The module has a dedicated OEM part number and a set of interchangeable numbers, which facilitates the selection of the correct unit based on data from the existing controller or the manufacturer's catalog. This allows for precise matching of the unit to a specific vehicle configuration, minimizing the risk of hardware or software incompatibility.

Before purchasing, it is recommended to compare the markings with the currently installed controller and verify compatibility with the specific vehicle equipment version to ensure proper cooperation with the electrical system and other modules in the car.

Technical characteristics and advantages of use

As an item from the Electronic control modules and controllers category, this DME ECU has been designed to operate in a petrol engine environment, taking into account the specifics of the N43 unit. The controller supports injection and ignition logic, as well as cooperation with sensors and actuators, ensuring consistent operation of the entire powertrain. Using an original module allows for maintaining factory operating parameters, which is important for diagnostics, adaptations, and potential software updates.

The main benefits of using this controller include:

• maintaining the factory performance characteristics of the N43 petrol engine,
• compatibility with manual transmission and associated control strategies,
• possibility of using existing BMW diagnostic infrastructure,
• easier integration with other electronic modules in the vehicle.

Condition, practical application, and ECU selection

The offered controller is a used item, which provides an attractive cost-effective solution while maintaining the functionality required for daily operation. When replacing the ECU in BMW E87 LCI 120i and E90 320i vehicles with the N43 engine, it is important to consider the fuel type, transmission type, and ECU type to ensure proper cooperation with the vehicle's electrical system and avoid engine starting issues.

Before installation, one should anticipate the potential need for programming, immobilizer matching, and adaptation to the specific vehicle. A properly selected and configured controller allows for restoring the correct operation of the powertrain after a failure of the previous module or in a situation where replacement is necessary for diagnostic reasons.

Control system expansion and additional information

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 additional control modules, auxiliary controllers, or electronic management units, check the available parts in the BMW electronic control modules and controllers category.

To better understand when choosing a used engine controller is justified and what to look for when selecting an ECU for a specific car, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?