BMW E87 LCI E90 118i 318i Petrol N43 ECU Kit 7599881 DME CAS3 Key Manual

BMW E87 LCI E90 118i 318i Petrol N43 ECU Kit is a complete, used electronic set designed for petrol engines with a manual transmission. Thanks to the factory BMW architecture and the preservation of the original configuration, the set ensures consistent drivetrain performance and stable engine operation. This is a solution for users looking for a technically matched control module at a reasonable price.

Specifications and technical data

• SKU: 7599881-7
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7599881
• Substitutable numbers: 12147599881, 7599881, 12147640015, 7640015, 12147621178, 7621178, 5WK93729, 61359226238, 9226238, KZ
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the ECU kit

The presented set from the Electronic control modules and controllers category is designed to work with BMW 1 Series E87 LCI and 3 Series E90 petrol engines in 118i and 318i versions, equipped with a manual transmission. The ECU engine controller is responsible for precise management of fuel injection, ignition, and auxiliary equipment operation, which translates into proper engine performance and predictable throttle response. By maintaining the original BMW control logic, the set allows for restoring the vehicle's correct operation after a failure of the previous module, without the need for universal solutions or adaptations not intended by the manufacturer.

Compatibility and selection by numbers

The element belongs to the group of original BMW solutions, which facilitates selection by OEM number and interchangeable numbers recorded in the technical specification. The presence of multiple reference numbers increases the chance of matching a specific car configuration, both in terms of hardware and software. To avoid problems with starting the vehicle, it is recommended to compare the markings with the currently installed controller or verify by VIN. In case of doubt, our guide on used electronics will be helpful – it describes in detail the selection of modules, HW/SW compatibility, and installation issues: Used automotive electronics – how to safely choose an ECU module and sensors.

Operating parameters: petrol and manual transmission

The set is intended for engines powered by petrol, which is crucial for ignition maps, injection strategies, and the operation of equipment characteristic of petrol units. Use with a different type of fuel would be inconsistent with the manufacturer's design and may lead to operational errors. At the same time, the controller is configured to work with a manual transmission. This means appropriate torque control algorithms, support for signals from clutch sensors, and proper reactions to load changes during manual gear shifting. This is important from the point of view of driving smoothness and the correct operation of onboard systems.

Benefits of choosing an original BMW module

Choosing an original engine controller from dismantling is a solution that combines controlled costs with maintaining the factory logic of the vehicle's operation. The main advantages of this solution include:

• maintaining consistency with the electrical installation and CAN network architecture in the BMW E87 LCI / E90,
• the ability to restore full vehicle functionality after a failure of the previous ECU,
• reducing the risk of compatibility problems compared to universal replacements,
• easier diagnostics using factory BMW service tools. For users considering the difference between new and used parts, our cost-quality guide may also be helpful: New or used? A comparison of the costs and quality of car parts.

Practical installation tips and further expansion

When installing the ECU kit in a BMW, it is recommended that the work be performed by a workshop with experience in the electronics of this brand. In many cases, it is necessary to match the software to a specific car (coding, possible synchronization with the immobilizer), so access to appropriate diagnostic tools is important. 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 control modules, auxiliary controllers, or additional ECU units, check the available parts in the BMW electronic control modules and controllers category.