BMW E90 320si N45 173HP Petrol Engine Unit ECU Kit DME 7560955 CAS2 Key Manual

BMW E90 320si N45 173HP Petrol Engine Unit ECU Kit DME CAS2 Key Manual is a complete petrol engine control unit kit with a manual transmission, designed for precisely selected versions of the BMW 3 Series E90. The set includes the DME module, CAS2 module, and a matched key, which allows for consistent management of the engine unit and the immobilizer system. This solution is particularly useful when replacing the engine controller, performing an engine swap, or conducting professional electronic control repairs.

Specifications and technical data

• SKU: 7560955-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7560955
• Substitutable numbers: 7560955, 12147560955, 7560956, 12147560956, 0261201108, 0 261 201 108, 6943791, 61356943791, 6943771, 61356943771, 6981416, 61356981416, 6943786, 61356943786, 6943775, 61356943775, 6943766, 61356943766, 6964051, 61356964051
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application and function of the ECU DME CAS2 kit

The presented kit belongs to the Electronic control modules and controllers group, responsible for advanced engine management and start authorization. Combining the DME controller with the CAS2 module and the key ensures data consistency, which in practice facilitates installation and reduces the need for complex programming compared to sourcing individual components.

The configuration is prepared for a petrol engine and manual transmission, which is crucial for proper cooperation with the vehicle's electrical system, injection maps, ignition, and security system logic. Thanks to this, the kit is an attractive base for professional repairs or restoring the factory control configuration in specialized workshops.

Benefits of using a complete controller kit

Choosing a complete ECU DME kit with CAS2 and a key reduces the risk of immobilizer synchronization issues, bus communication errors, and software incompatibility. From the perspective of the service and the user, this means:

• a consistent package of control elements prepared for joint operation,
• easier adaptation in the vehicle compared to selecting individual modules,
• the possibility of restoring a configuration close to the factory one while maintaining the correct operating parameters of the petrol engine,
• increased predictability of the repair result compared to mixing different controller versions.

For workshops specializing in the BMW E90, such a kit is a practical solution when replacing a damaged controller, repairing after water damage, or dealing with communication problems in the security system.

Technical characteristics and BMW fitment

The offered item comes from the BMW line and is compatible with the electronic architecture of the 3 Series E90 with the N45 unit producing 173 HP. The kit has been designed to work with a vehicle installation based on petrol fuel, taking into account specific control maps, ignition characteristics, and the logic of anti-theft protection systems.

The presence of a dedicated key included with the CAS2 module facilitates the installation and subsequent configuration process, as the key, CAS, and DME are linked together. For correct selection for a specific car, it is worth using the VIN and part numbers, as well as verifying the software version compatibility with the current vehicle configuration.

Condition, verification, and OEM selection

The kit is in used condition, which in practice means it has been dismantled and is intended for re-installation after proper verification by a qualified service center. When selecting, it is recommended to check compatibility by OEM number and interchangeable numbers, as well as to compare the fuel type and transmission type with the target vehicle configuration.

To better understand the principles of safely using used engine controllers and other electronic modules, it is worth reading the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. There you will find practical tips regarding selection by VIN/OEM, hardware and software compatibility, and examples of applications in real repairs.

Additionally, if you want to organize the entire process of purchasing parts online – from verifying the seller to checking numbers and documentation – the following guide will be helpful: Safe purchase of used car parts online – a step-by-step guide, which discusses best practices for both drivers and workshops.

Expanding the control system in BMW – related elements

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, comfort modules, or auxiliary system controllers, check the available parts in the BMW electronic control modules and controllers category.