BMW 1 3 Series E81 E87 E90 E91 120i 320i N43 ECU Kit DME CAS3 Key 7583225 Manual

Visual condition of the part

The product shows signs of use visible in the photos. BMW 1 3 Series E81 E87 E90 E91 120i 320i N43 ECU Kit DME CAS3 Key is a set from the Electronic control modules and ECUs category, designed for BMW vehicles with a petrol engine and manual transmission. The kit provides a solid foundation for professional repair or replacement of the engine control system, ensuring component consistency and proper integration with the vehicle's electrical system.

Specifications and technical data

• SKU: 7583225-16
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7583225
• Substitutable numbers: 7583225, 12147583225, 7599881, 12147599881, 7507228, 12147507228, 7580279, 12147580279, 7593667, 12147593667, 7575668, 12147575668, 7579144, 12147579144, 7599882, 12147599882, 7583227, 12147583227, 7593666, 12147593666, 5WK93643, 9147195, 61359147195, 12147579142, 7579142, 12147585303, 7585303, 12147575665, 7575665
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and compatibility

The presented engine control unit kit has been prepared for BMW E81, E87, E90, and E91 series models equipped with a petrol engine and manual transmission. This combination of parameters allows the kit to be used in standard drivetrain configurations of these generations, without the need to adapt components from other fuel versions or automatic transmissions. As this is a cohesive control kit, it minimizes the risk of communication issues within the vehicle's bus and facilitates diagnostics after installation. This solution is particularly useful when replacing a damaged ECU in vehicles that are heavily used or have undergone post-accident repairs.

Technical characteristics of the kit

As an item from the Electronic control modules and ECUs category, the product is responsible for key engine management functions – from fuel injection control and ignition timing to communication with sensors and other modules in the vehicle. Using a dedicated controller for the petrol version with a manual transmission ensures the correct engine operating maps and logic for driver assistance systems are maintained. The kit has an assigned OEM part number and associated interchangeable numbers, which facilitates selection for a specific vehicle configuration. In practice, this means it can be precisely matched to a given VIN while maintaining compliance with factory BMW standards.

Condition, origin, and advantages of use

The offered engine control unit kit is an original BMW brand component in used condition, which allows for a reasonable cost while maintaining factory specifications. Original modules of this type are designed for the specific electrical architecture of the vehicle, ensuring stable operation, correct communication with other controllers, and predictable behavior of safety systems. Choosing a complete control kit is particularly beneficial when the existing controller has suffered electronic damage or when there are difficult-to-diagnose engine performance issues. Using an OEM component reduces the risk of incompatibility that may arise with aftermarket replacements of uncertain origin.

Installation and operational tips

Due to the importance of the engine control unit for the safety and proper operation of the vehicle, installation by a specialized service center with experience in BMW electronics is recommended. In many cases, it will be necessary to perform adaptation or programming procedures so that the kit is correctly paired with the immobilizer, wiring, and equipment of the specific vehicle. Before purchasing, it is worth verifying compatibility via the OEM number or interchangeable numbers and comparing the vehicle configuration (fuel type, transmission type). This approach reduces installation time, limits the risk of additional costs, and allows for faster restoration of the car's full functionality.

Control system expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional control modules, auxiliary controllers, or engine management systems, check out the available parts in the BMW electronic control modules and ECUs category. When selecting used electronic modules, it is worth knowing the basic principles of selection and verification of such components. Practical advice on choosing used engine controllers, comfort modules, and parking sensors can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.