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 ensures consistent control of the powertrain, enabling proper communication between the engine electronics and other vehicle systems.

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 function of the engine control unit

The presented engine control unit kit is dedicated to selected BMW E81, E87, E90, and E91 series models with a petrol engine and manual gearbox. Its task is to precisely manage engine operating parameters, such as fuel dosage, ignition, and auxiliary equipment interaction, which translates into stable powertrain operation and predictable responses to driver inputs.

Thanks to the use of original BMW architecture, the module works with the vehicle's factory electrical installation, which facilitates integration with existing diagnostic and service systems. This solution allows for maintaining software and vehicle configuration consistency within a single model platform.

Compatibility and interchangeable numbers

The control unit kit has been designed with compatibility within the BMW model family in mind, and the applied part numbers and interchangeable numbers allow for precise matching of the component to a specific car configuration. The presence of multiple reference numbers increases the chance of selecting the appropriate module for a given model year, trim level, and engine variant.

Before purchasing, it is worth verifying compatibility by OEM number or interchangeable numbers and comparing the vehicle configuration (fuel type, gearbox type) to ensure proper cooperation with the installation and other control units in the car.

Technical characteristics and vehicle integration

As an element from the Electronic control modules and ECUs category, the kit is responsible for communication within the vehicle network and data exchange with other modules, such as comfort systems, safety systems, or driver assistance systems. A correctly selected control unit allows for maintaining factory vehicle functions, including OBD diagnostics support and error reading/clearing.

The module is designed to work with a petrol engine and a manual transmission, which is significant for control maps, clutch operation logic, RPM control, and powertrain protection strategies. This ensures the consistent operation of the entire drivetrain.

Condition, origin, and benefits of choosing a used control unit

The offered kit is a used item, sourced from a dismantled BMW vehicle. Choosing such a solution allows for significantly reducing repair costs compared to new components, while maintaining the manufacturer's original specifications. This is particularly beneficial for older model generations, where the availability of new modules may be limited or economically unjustified.

To better understand the principles of selecting and installing used control units, it is worth reading the guide on automotive electronics. Detailed information on selection by OEM number, hardware and software compatibility, and practical aspects of installation can be found in the article "Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?".

Support for expanding the BMW control system

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 control modules, ECU units, or auxiliary controllers, check the available parts in the BMW electronic control modules and ECUs category.

For users considering further improvement of the car's performance using aftermarket components, an interesting supplement to knowledge may be the guide on vehicle modifications. Practical tips on safe tuning with used parts can be found in the article "Tuning with used parts – how to gain performance without spending a fortune".