BMW E87 LCI E90 118i 318i N43 Petrol ECU Engine Control Kit DME 7579142 CAS3 Key

BMW E87 LCI E90 118i 318i N43 Petrol ECU Engine Control Kit is a set including the DME engine control unit, CAS3 module, and a matched key, prepared for operation in a petrol-powered system. This solution is intended for users seeking a consistent, factory-spec electronic control package that facilitates the restoration of full powertrain functionality.

Specifications and technical data

• SKU: 7579142-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7579142
• Substitutable numbers: 12147599881, 7599881, 12147579142, 7579142, 12147640015, 7640015, 12147621178, 7621178, 5WK93709, 61359262361, 9262361
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Application and function of the engine control kit

The presented BMW E87 LCI E90 118i 318i N43 Petrol ECU Engine Control Kit is designed for BMW 1 Series E87 LCI and 3 Series E90 models in 118i and 318i versions with the N43 engine. In one package, you receive the components responsible for managing engine operation, start authorization, and communication with the immobilizer system, which significantly simplifies the process of replacing electronics in the vehicle.

A kit of this type is particularly useful in situations where the engine control unit has been damaged, there are issues with CAS–DME synchronization, or errors preventing the engine from starting have occurred. Using a matched set minimizes the risk of software incompatibility and reduces the need for advanced coding.

Benefits of using a complete DME + CAS3 + key kit

Choosing a complete electronic control package offers a range of practical technical benefits:

• consistency of components responsible for engine control and start authorization,
• reduction of work related to immobilizer and key matching,
• easier diagnostics and configuration compared to replacing individual modules,
• preservation of the factory operating logic of the N43 petrol engine control system.

Thanks to this solution, a workshop or private user can restore the vehicle's efficiency faster, reducing downtime and the risk of additional communication problems between modules.

Technical characteristics and compatibility

The kit belongs to the Electronic control modules and ECUs group, which means it is a key element for the proper operation of the powertrain and vehicle security systems. The set is designed to work with a petrol engine, which is important when selecting parts based on fuel type and control architecture.

Before installation, it is recommended to verify compatibility with the specific vehicle equipment version and consult a service center or automotive electrician regarding potential coding and adaptation. Professional installation allows you to fully utilize the kit's potential and ensures stable engine operation in the long term.

Product condition and practical installation aspects

The offered kit comes from the used parts group, which is an attractive cost-effective solution while maintaining the original manufacturer's specifications. This type of OEM electronics is often chosen by workshops specializing in the BMW brand due to its predictable behavior in the vehicle and the ability to integrate with the existing installation.

During installation, it is important to follow the correct sequence of work: removing the old ECU and CAS module, installing the new kit, and then performing diagnostic procedures and any necessary adaptation. Careful installation reduces the risk of communication errors in the vehicle bus and ensures a stable start.

Substantive support and selection of BMW electronics

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 control systems, check the available parts in the BMW electronic control modules and ECUs category.

When choosing used controllers and modules, it is worth using reliable advice on selecting electronics, verifying compatibility, and safe installation. Practical tips on when it pays to reach for used ECUs, comfort modules, or parking sensors can be found in the article "Second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?", which will help you consciously plan your repair and reduce the risk of an unsuccessful purchase.