BMW E90 320si 173HP N45 Petrol Engine ECU Kit DME 7560955 + CAS2 + 2 Keys Manual

BMW E90 320si 173HP N45 Petrol Engine ECU Kit DME + CAS2 + 2 Keys Manual is a factory electronic engine control unit, designed specifically for the petrol version with a manual transmission. The original BMW design ensures full compatibility with the vehicle's electrical architecture and stable cooperation with other modules. This is a solution for users who want to restore proper engine operation without experimenting with unreliable replacements.

Specifications and technical data

• SKU: 7560955-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7560955
• Substitutable numbers: 12147560956, 7560956, 12147560955, 7560955, 0261201108, 0 261 201 108, 61356943791, 6943791
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the ECU

The presented engine computer is an element from the Electronic control modules and ECUs group, responsible for supervising the operation of the N45 unit in the 173 HP version. The module manages, among other things, fuel dosing, ignition, and cooperation with sensors and actuators, which translates into proper petrol engine performance and predictable throttle response. Thanks to being dedicated to the manual transmission configuration, the ECU is optimized for the gear ratios and loads typical of this type of transmission. This allows for maintaining the consistency of the drivetrain operation and reducing the risk of errors resulting from improper electronics selection.

Benefits of using an original BMW module

Using an original engine computer in the BMW E90 320si provides a number of practical advantages in daily operation:

• preservation of factory engine control maps for the N45 unit,
• consistent cooperation with the petrol system and factory sensors,
• reduction of compatibility issues compared to universal replacements,
• easier diagnostics using standard BMW service tools. For users who expect predictable car behavior after repair, choosing an original ECU from the same family as the factory-installed component is a safe and technically justified solution.

Product characteristics and practical application

The engine computer is designed to work in a petrol supply system, which is crucial for the correct selection of the component in relation to diesel versions. Integrated control algorithms are adapted to the specifics of the N45 unit, including its RPM range, loads, and emission requirements provided for this model. The module comes from the used OEM parts segment, which allows for a significant reduction in repair costs compared to purchasing new electronics, while maintaining the original design and purpose. In practice, this is a frequently chosen solution for ECU damage resulting from surges, flooding, or internal electronic faults.

Selection, installation, and service aspects

When replacing the engine computer in the BMW E90 320si, it is crucial to match the module to the specific vehicle configuration, particularly regarding fuel type and manual transmission. In many cases, it is necessary to perform appropriate adaptation or programming procedures in the vehicle, therefore it is recommended that the installation and configuration be performed by a workshop with experience in BMW electronics. For those considering the use of a used ECU, it is worth recommending additional reading of expert materials. Practical tips on choosing and verifying such elements can be found in the article Second life of electronics – when is it worth choosing used engine ECUs, comfort modules, and parking sensors?, where issues such as ECU selection and risks associated with incorrect part identification are discussed.

Expansion of the control system in BMW

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, management modules, or related electronic systems, check the available parts in the BMW electronic control modules and ECUs category. Thanks to this, you can select a coherent set of electronic components in one place, which facilitates service, shortens vehicle downtime, and helps maintain a uniform standard of solutions used in your car.