BMW E87 E90 N46 120i 320i 150HP Engine Control ECU DME 7565300 Manual

BMW E87 E90 N46 120i 320i 150HP Engine Control ECU DME is a factory electronic control module designed for the N46 engine unit in the 3 Series E90, compatible with a manual transmission. It is responsible for precise engine management, ensuring stable performance, correct throttle response, and proper integration with other vehicle systems. This solution is dedicated to users who want to restore full drivetrain efficiency while maintaining the original BMW control architecture.

Specifications and technical data

• SKU: 7565300-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7565300
• Substitutable numbers: 12147565301, 7565301, 12147565300, 7565300, 0261201160, KZ
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the DME controller

The DME engine computer in BMWs with the N46 unit is responsible for comprehensive control of the combustion process, fuel injection, ignition, and communication with sensors and actuators. When paired with a manual transmission, it ensures consistent drivetrain operation, proper idle speed, smooth acceleration, and correct response to load changes. Using an original module from the Electronic control modules and controllers category allows you to maintain factory engine maps and operating logic.

Benefits of using an original BMW module

Choosing an original engine computer for the BMW E90 320i N46 is important from both a technical and operational standpoint. The module is designed specifically for a given engine and transmission configuration, which results in:

• consistent cooperation with the vehicle's electrical system and communication bus,
• preservation of factory engine operating parameters,
• proper support for diagnostic functions via service testers,
• reduced risk of errors resulting from incompatible universal controllers.

For the user, this means stable engine operation, predictable vehicle behavior, and easier diagnostics in the future.

Selection, compatibility, and installation

For the DME engine computer to function correctly, it is crucial to match it to the specific vehicle configuration, including the transmission type. In the case of versions with a manual gearbox, both hardware compatibility and control software are essential. Before installation, it is recommended to verify the part via the OEM number and interchangeable numbers, as well as consult with a diagnostician or automotive electrician regarding potential adaptation, coding, or synchronization with the immobilizer.

The installation process itself should be performed by a specialist dealing with BMW electronics, following safety procedures (disconnecting power, protection against electrostatic discharge, correct wiring harness connection). A correctly selected and configured controller allows for the restoration of full engine control functionality without interfering with the unit's mechanics.

Why consider a used engine computer

For controllers in the Electronic control modules and controllers category, choosing a used, original module is often a reasonable alternative to purchasing a new part. It allows for a significant reduction in repair costs while maintaining factory build quality and fitment. A well-selected second-hand controller from a reliable source can effectively replace a damaged module without the need for installation modifications.

If you want to better understand how to safely choose used engine controllers and other electronic components, how to check compatibility, and what to look for during installation, check out the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

Expanding the control system in your 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 out the available parts in the BMW electronic control modules and controllers category.