BMW E60 LCI E61 LCI 320i N43 N43B20A Petrol Engine Control Unit ECU Kit 7599881

BMW E92 118i 318i N43 143HP ECU KIT DME 7599881 CAS3 + Key Automatic is a complete kit from the Electronic Control Units and Controllers group, designed for BMW vehicles with an N43 engine producing 143HP and an automatic transmission. The kit includes the DME engine control unit, the CAS3 module, and a matched key, significantly simplifying professional replacement of the control system in the car. This is a practical solution for workshops and users who want to restore the correct operation of the powertrain without time-consuming adaptation of individual components.

Specifications and technical data

• SKU: 7599881-23
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7599881
• Substitutable numbers: 12147583225, 7583225, 121476211781214759988112147595179, 121475936661214750722712147579142, 7621178, 75998817595179759366675072277579142, 121475853031214758322512147580279, 758530375832257580279757566575737589147212, 61359237047, 9237047, 12147575665
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and Compatibility

The presented ECU KIT is designed for BMW 1 Series and 3 Series E92 models with a 143HP N43 engine, working with an automatic transmission. The combination of the DME control unit, CAS3 module, and key ensures consistency of the immobilizer system and engine control logic, which is particularly important when replacing electronics in modern gasoline engines.

The complete configuration of electronic components minimizes the risk of vehicle starting problems, CAN network communication errors, or coding mismatches between modules. This solution is effective for repairs after control unit failure, as well as for advanced diagnostic work requiring the installation of a functional kit.

ECU KIT DME CAS3 + Key Construction

The kit includes key components responsible for engine management and start authorization. The DME control unit is responsible for precise control of fuel injection, ignition, and cooperation with the automatic transmission, while the CAS3 module integrates security functions and key handling. The presence of a matched key ensures data consistency throughout the system, facilitating installation and subsequent configuration.

Since all components come from a single kit, the user receives a cohesive package that can be used as a basis for further programming or adaptation in the vehicle. This is particularly beneficial for cars where several modules have been damaged simultaneously or where difficult-to-diagnose starting problems occur.

Benefits of Using a Used OEM Kit

Choosing an original BMW electronic kit from dismantling allows for the preservation of factory engine control logic and compatibility with other vehicle systems. A used DME + CAS3 + key set is an attractive alternative to new components, especially for older generations of BMWs where the cost of new parts can be disproportionately high compared to the car's value.

With proper diagnostics and correct selection based on engine version and transmission type, such a kit allows for efficient restoration of vehicle functionality. For those who want to better understand how to effectively use dismantled parts in BMW electronics, the article will be helpful: Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Dismantled Parts?.

If you are considering why an original, used control module might be more predictable than a cheap aftermarket part, it's worth reading the practical guide: 5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement.

Designed for Automatic Transmission

The presented ECU KIT is configured to work with an automatic transmission, which is important for correct communication between the engine control unit and the transmission module. Proper matching for the transmission type reduces the need for extensive software changes and lowers the risk of errors related to transmission operation, driving modes, or the kick-down function.

This solution is particularly useful for workshops specializing in BMW, aiming to reduce repair time and provide the customer with a predictable final result after replacing the control electronics.

BMW Control System Expansion

If you are planning a comprehensive repair or modernization of the engine electronics area in your BMW and need other parts from the same group, such as additional control units, security modules, or systems cooperating with the powertrain, check the available parts in the category BMW Electronic Control Units and Controllers.