BMW E87 E90 118i 318i N46 129HP Engine ECU KIT DME 7561834 CAS2 + Key Manual

Description

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E87 E90 118i 318i N46 129HP Engine ECU KIT DME CAS2 + Key Manual is an original electronic control unit designed for N46 engines in 1 Series and 3 Series models with a manual transmission. As part of the Electronic control modules and ECUs group, it is responsible for precise engine management, ensuring stable power characteristics and proper integration with other vehicle systems. This solution is dedicated to users who expect a proven OEM part matched to a specific drivetrain configuration.

Specifications and technical data

• SKU: 7561834-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561834
• Substitutable numbers: 12147565301, 7565301, 12147561834, 7561834, 0261201159, 61356943791, 6943791
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the engine control unit

The presented engine ECU is designed to work with the N46 engine in BMW 1 Series E87 and 3 Series E90 models in 120i and 320i versions. The controller monitors key engine operating parameters, such as fuel injection, ignition timing, and sensor signal response, which translates into smooth acceleration characteristics and predictable vehicle behavior in various road conditions. Thanks to its adaptation to a specific drivetrain configuration with a manual transmission, it ensures consistent operation of the powertrain and proper communication with other electronic modules.

Benefits of using an original BMW module

Choosing an original controller from the Electronic control modules and ECUs group allows you to maintain the factory logic of BMW systems. The appropriate hardware architecture and software prepared for the specific N46 engine reduce the risk of communication errors in the vehicle’s bus and compatibility issues. For the user, this means stable engine performance, predictable throttle response, and proper cooperation with diagnostic systems.

The component comes from vehicle dismantling, which in practice allows for combining reasonable costs with maintaining the manufacturer’s original specifications. This is a particularly advantageous solution for repairs where matching the existing electrical installation and vehicle equipment configuration is essential.

Integration with the drivetrain and vehicle electronics

The engine ECU in this version is prepared for operation with a manual transmission, which is significant for how the controller interprets loads, rotational speed, and signals from drivetrain-related sensors. Properly matching the module to the transmission type helps avoid problems with rough engine idling, incorrect throttle response during gear changes, or the appearance of fault codes in the memory.

Thanks to its factory design, the controller works with other BMW electronic modules, such as comfort, safety, and onboard diagnostic systems. This facilitates subsequent maintenance, fault reading, and potential software updates performed by specialized workshops.

Using a used part in professional repair

As a used part, the engine ECU is a practical solution for repairs where maintaining the vehicle’s original electrical architecture while optimizing costs is important. In many cases, using a dismantled controller allows for restoring full powertrain functionality without the need to interfere with the installation or use replacement solutions of uncertain compatibility.

For workshops specializing in the BMW brand, such a module is a valuable component that can be matched to a specific vehicle after proper configuration and adaptation. This enables repairs to be carried out in a manner similar to factory procedures, maintaining the consistency of all electronic systems.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of your BMW’s engine area and need other components from the same group, such as engine ECUs, comfort modules, or auxiliary system control units, check the available parts in the BMW electronic control modules and ECUs category.

To better plan service work and consciously use dismantled parts, it is worth familiarizing yourself with practical tips regarding electronics maintenance for this brand – a detailed discussion can be found in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 Series models using dismantled parts?.