BMW E87 E90 120i 320i N46 150PS Engine ECU KIT DME 7561834 CAS2 + Key Manual

Visual condition of the part

The product shows signs of use visible in the photos. BMW E87 E90 120i 320i N46 150PS Engine ECU KIT DME CAS2 + Key Manual is an original electronic control module designed for use with the N46 engine in BMW 1 Series E87 and 3 Series E90 models with a manual transmission. This specialized controller from the Electronic control modules and ECUs category ensures precise management of the engine's operation while maintaining BMW's factory characteristics. It is a solution for users looking to restore proper engine control system functionality while maintaining high compatibility with the vehicle's original configuration.

Specifications and technical data

• SKU: 7561834-7
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561834
• Substitutable numbers: 7565300, 12147561834, 7561834, 12147565300, 1214755729012147557930, 7557290, 7557930, 12147565301, 7565301, 0261201159, 61356943791, 6943791
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented engine computer is designed for use with the N46 unit in 120i and 320i versions equipped with a manual transmission. Its task is to coordinate key engine operating parameters, such as fuel dosage, ignition timing, and response to sensor signals, in order to maintain the proper dynamics and refinement characteristic of BMW. By using a dedicated control module, it is possible to maintain software and hardware consistency with the vehicle's factory electrical architecture, which reduces the risk of communication issues within the CAN network and with other onboard controllers.

Benefits of using an original BMW module

Using an original controller instead of a damaged component allows for maintaining predictable drivetrain behavior and proper cooperation with other vehicle systems. In practice, this means:

• stable engine operation across the full rev range,
• correct response to load and gear changes in a manual transmission,
• consistency with factory control maps and the logic of onboard systems,
• reduced risk of communication errors between modules. For workshops and private users, this means easier diagnostics, a predictable adaptation process, and the ability to use standard BMW service procedures.

Integration with the installation and drivetrain

The computer is intended for installation in vehicles with a manual transmission, which is significant for how it processes signals related to engine load, rotational speed, and cooperation with the drivetrain. Properly matching the controller to the transmission type helps avoid issues with incorrect responses to gear changes or parameter reading errors. The component comes from the Electronic control modules and ECUs group, meaning it is an integral part of the network of controllers responsible for communication between the engine, body systems, and comfort systems. A correctly selected module facilitates maintaining vehicle configuration consistency and limits the need for wiring or connector modifications.

Product characteristics and practical application

The offered controller is a BMW brand component, which translates to compliance with factory quality and design standards. The product is marked as used, making it an economical solution for users who want to restore engine control system efficiency without sacrificing the original BMW architecture. In practice, the computer will work well both for typical replacement of a damaged module and for post-accident repairs or restoring a car to full functionality after an electrical system failure. The workshop is responsible for the standard procedure of matching and potential programming in accordance with the requirements of the specific vehicle.

Expanding the control system in a BMW

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 controllers, auxiliary modules, or engine management systems, check the available parts in the BMW electronic control modules and ECUs category. To compare how other premium manufacturers approach maintaining driving character and electronics performance, it is worth reading an article describing how original modules and components influence a car's behavior – more information can be found in the post Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.