BMW E87 E90 N46 120i 320i 150HP Engine Unit ECU kit DME 7565300 CAS3 Key Manual

BMW E87 E90 N46 120i 320i 150HP Engine Unit ECU kit DME CAS3 Key Manual is an original set from the Electronic control modules and controllers category, designed to manage the operation of the N46 petrol engine with 150 HP. This solution is intended for users who expect stable engine performance, correct communication with the vehicle's electrical system, and compliance with BMW's factory electronics architecture.

Specifications and technical data

• SKU: 7565300-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7565300
• Substitutable numbers: 7565300, 12147565300, 7565301, 12147565301, 7561891, 12147561891, 7550867, 12147550867, 7550857, 12147550857, 7568658, 12147568658, 7550869, 12147550869, 7568646, 12147568646, 4834203, 12144834203, 0261201160, 6943814, 61356943814, 6943797, 61356943797
• Fuel type: Petrol
• Gearbox type: Manual
• ECU type: Engine Control Unit
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented ECU DME set is dedicated to BMW 1 Series E87 and 3 Series E90 models with the 150 HP N46 petrol engine and a manual transmission. As an Engine Control Unit, it is responsible for precise control of the combustion process, fuel delivery, ignition, and interaction with sensors and actuators in the engine bay. Selecting a controller compatible with the specific engine version and drivetrain configuration is crucial for the proper operation of the power unit, the absence of errors in the DME memory, and correct communication with other modules in the vehicle.

Benefits of using an original BMW ECU

Using an original engine computer from dismantling ensures:

• preservation of the factory control logic for the N46 engine,
• consistency with the vehicle's electrical installation and communication network,
• the ability to work correctly with a manual transmission,
• easier integration with existing modules in the car. For workshops and users, this means a lower risk of compatibility issues and a more predictable adaptation and coding process compared to non-factory replacements. The original BMW engine controller is designed for a specific platform, which facilitates diagnostics and subsequent service.

Operating parameters and technical compliance

The ECU DME from this offer is adapted to work with a petrol engine and a manual transmission, which is important when selecting the appropriate software and control maps. The control unit supports typical functions for this generation of BMW, such as mixture control, ignition management, cooperation with the OBD diagnostic system, and communication with other electronic modules of the vehicle. In practice, this translates into stable idle speed, correct throttle response, proper operation of engine protection systems, and the ability to fully utilize the 150 HP power in daily use.

Application in BMW service and repairs

The ECU DME set will work well both when replacing a damaged engine computer and during more complex repairs of the engine control system in BMW E87 and E90 models. Thanks to the preservation of the original electronics architecture, it is possible to use standard diagnostic procedures and service tools intended for this generation of vehicles. When working on BMW electronics, it is worth familiarizing yourself with practical tips regarding control modules and onboard systems – 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 parts from dismantling?, where issues related to engine controllers are described, among other things.

Expanding work in the field of BMW electronics

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, management modules, or related electronic systems, check out the available parts in the BMW electronic control modules and controllers category. For extensive service work on the drivetrain and starting system, information on selecting original components from dismantling may also be helpful – more on this topic can be found in the guide Starting system failure: why does a used original beat regeneration when replacing an alternator and starter?, which shows the advantages of using factory-used components.

Summary

BMW E87 E90 N46 120i 320i 150HP Engine Unit ECU kit DME CAS3 Key Manual is a technically matched, original element from the Electronic control modules and controllers category, designed for N46 petrol engines working with a manual transmission. Choosing this solution allows you to maintain the factory performance characteristics of the power unit, facilitates diagnostics, and reduces the risk of compatibility problems compared to random replacements.