BMW E87 LCI E90 120i 320i Petrol N43 170HP ECU Kit DME 7579142 CAS3 Key Manual

BMW E87 LCI E90 120i 320i N43 170HP ECU Kit DME CAS3 Key is a complete electronic set designed for N43 170 HP gasoline engines in BMW 1 and 3 Series models with manual transmission. The kit includes the DME engine control unit, the CAS3 module, and a matched key, facilitating the restoration of proper powertrain operation after an electronic failure. This solution allows for a cohesive, professional repair without the need for tedious matching of individual components.

Specifications and technical data

• SKU: 7579142-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7579142
• Substitutable numbers: 12147579142, 12147599881, 12147583225, 12147507228, 12147580279, 12147593667, 7585654, 12147585654, 7575668, 12147575668, 7579144, 12147579144, 7585304, 12147585304, 12147599882, 12147573758, 12147583227, 12147583228, 12147595179, 5WK93709, 61359147212, 9147212, 51167130711, 7130711, 51167154478, 7154478
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application and Compatibility

The kit is designed for BMW vehicles with a 170 HP N43 gasoline engine equipped with a manual transmission. This configuration is typical for the 120i and 320i versions, where precise engine control is crucial for smooth operation, performance, and fuel consumption. Combining the DME, CAS3, and key in one package minimizes the risk of immobilizer matching issues, module synchronization problems, and engine starting difficulties after electronic component replacement.

ECU DME CAS3 Key Kit Construction

The kit includes the DME engine control unit responsible for managing fuel injection, ignition, and auxiliary systems, the CAS3 module serving as an anti-theft protection, and a key that works with this module. This configuration creates a cohesive electronic system that, after correct installation and adaptation, allows for stable engine operation and proper vehicle start system functionality. The kit belongs to the Electronic Control Modules and Units group, meaning it directly influences the powertrain's operating logic.

Benefits of Using a Complete Kit

Using a complete ECU Kit DME CAS3 with key offers several practical benefits in service and operation:

• Engine electronics and security system consistency,
• Reduced issues with immobilizer coding and matching,
• Faster repair process compared to replacing individual modules,
• Preservation of the typical performance characteristics of the N43 170 HP unit.

For workshops specializing in the BMW brand, such a kit is a convenient service solution, allowing for efficient resolution of faults related to damaged engine control units or CAS3 modules.

Condition, Origin, and Technical Aspects

The kit comes from a BMW vehicle and is a used component, which translates to a favorable cost-to-functionality ratio while maintaining the original manufacturer's specifications. For correct installation, it is recommended to have it installed by a workshop experienced in working with BMW electronics, particularly with DME and CAS3 systems, and possessing access to appropriate diagnostic software. Properly performed adaptation enables the restoration of full powertrain functionality without interfering with the engine's mechanics.

BMW Control System Expansion

If you are planning a comprehensive repair or upgrade of the engine control area in your BMW and need other components from the same group, such as additional control units, comfort modules, or body control systems, check the available parts in the BMW Electronic Control Modules and Units category.

Knowledge and Technical Support

When working with advanced electronics in premium vehicles, it is advisable to consult reliable sources of knowledge. If you are interested in how original modules and control units influence the driving dynamics of premium cars and how to maintain the brand's factory DNA using aftermarket parts, read the article Audi and Pure Emotion. How Used Parts Help Maintain Brand DNA?. Although it concerns a different brand, the issues of precision, electronics quality, and the importance of original modules discussed there are analogous to the solutions used in BMW.