BMW E87 LCI E90 120i 320i Petrol ECU Kit N43 DME 7595179 CAS3 + Key

BMW E87 LCI E90 120i 320i Petrol ECU Kit is an original electronic engine control unit designed for BMW 1 and 3 series petrol engines. This component from the Electronic control modules and controllers category is responsible for precise engine management, ensuring stable power characteristics and proper cooperation with other vehicle systems. Thanks to its factory origin, it is the right foundation for professional engine control system repairs.

Specifications and technical data

• SKU: 7595179-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7595179
• Substitutable numbers: 12147583225, 7583225, 121476211781214759988112147595179, 121475936661214750722712147579142, 7621178, 75998817595179759366675072277579142, 121475853031214758322512147580279, 75853037583225758027975756657573758, 61359147226, 9147226, 5WK93727, 12147599881, 7599881, 12147595179, 7595179, 12147593666, 7593666
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented engine computer is dedicated to BMW models from the 120i and 320i family with petrol engines. As a central ECU control module, it monitors, among other things, fuel dosage, ignition timing, auxiliary equipment operation, and communication with other controllers in the vehicle. A correctly selected controller allows for restoring the factory operating parameters of the power unit after a failure or damage to the previous module. This element is part of the engine management system, so its selection should take into account the vehicle configuration, fuel type, and the electronic architecture used. A properly matched controller minimizes the risk of communication errors in the CAN network and facilitates adaptation during programming.

Benefits of using an original BMW module

Using an original controller from the Electronic control modules and controllers group ensures:

• preservation of factory engine and auxiliary equipment control logic,
• consistency with BMW diagnostic software,
• proper cooperation with other modules in the vehicle,
• possibility of professional adaptation and coding in accordance with the manufacturer's guidelines. For workshops specializing in the BMW brand, such a controller is a solid base for further configuration, mapping, and potential software updates in accordance with the requirements of a specific car.

Operational characteristics and installation

The engine computer designed for BMW 1 and 3 series petrol units is a modular construction, prepared for installation in factory mounting points. In practice, this means the possibility of using the existing wiring harness and standard connectors, which facilitates service work and shortens replacement time. After installation, a programming and matching procedure for the immobilizer and vehicle configuration is required. Due to advanced electronics and integration with safety systems, it is recommended to entrust the installation and configuration of the controller to a service center equipped with appropriate diagnostic software. This helps avoid starting problems, fault memory errors, and improper engine operation.

Why consider a used engine controller

A used BMW engine computer is a solution that allows for reducing repair costs while maintaining original build quality. In many cases, it is a reasonable alternative to new components, especially in older vehicle generations where the availability of brand-new parts can be limited. However, it is crucial to correctly match the module to the specific car version and verify compatibility with the installation and software. If you want to better understand when choosing a used controller is cost-effective and what to look for when purchasing, check out our guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?. You will find practical tips there regarding the selection and operation of used automotive electronics.

Expanding the control system in BMW

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 additional controllers, management modules, or related electronic systems, check the available parts in the BMW electronic control modules and controllers category. Additionally, to better plan your service strategy in the context of rising prices for new premium car components, you can read our market analysis: Crisis in the new parts market? Why used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend in 2026. This is a valuable source of knowledge for those who want to consciously invest in original used components.