BMW 1 3 Series E81 E87 LCI E90 116i 316i N45N ECU Kit DME 7567321 + CAS3 + Key

BMW E87 E90 116i 316i N45N ECU Computer 7567321 is an original engine control unit from the Electronic Control Modules and Controllers group, designed for use in selected BMW 1 Series and 3 Series models with the N45N engine. A used ECU module is a sensible, technically justified solution for repairing the engine control system, allowing you to maintain the factory operating logic of the powertrain and compatibility with the vehicle's electrical system. By adhering to the OEM standard, the controller ensures proper cooperation with the vehicle's other electronic systems.

Specifications and technical data

• SKU: 7567321-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7567321
• Substitutable numbers: 12147567321, 7567321, 61356943834, 6943834, 12147591162, 7591162, 12147591163 12147585435 12147585249, 12147581848, 12147582242 12147581610 12147557951, 12147581609, 7591163 7585435 7585249 7581848, 7582242 7581610 7557951 7581609, 0261201553, 0 261 201 553
• Category: ECUs & Computer Modules

ECU Controller Application and Function

The presented engine computer is designed for BMW vehicles with the N45N engine, specifically for the 116i and 316i versions in E87 and E90 body styles. As an OEM component, it is responsible for precise control of the powertrain's operation, including fuel injection, ignition, and communication with sensors and actuators in the engine bay. A correctly selected ECU allows for the preservation of the engine's factory operating parameters, stable running characteristics, and compatibility with safety and comfort systems.

By using an original module from the same hardware family, full compatibility with the wiring harness, connectors, and the vehicle's electronic architecture can be maintained. This is particularly important when replacing a controller due to failure, water ingress, or thermal damage.

Selection by OEM Number and Interchangeable Numbers

This controller belongs to a group of parts that may have different reference numbers in BMW catalogs. This means the module can replace several variants with similar hardware and software specifications, making it easier to find a suitable replacement during repairs. In practice, selection is based on the OEM number, interchangeable numbers, and vehicle data (model, year, engine type).

To ensure correct operation after installation, it is recommended to:

• verify compatibility by part number and reference numbers,
• check compatibility with the specific N45N engine version,
• consider software differences (HW/SW) depending on the market and vehicle equipment.

More information on selecting used controllers by OEM and reference numbers can be found in our guide: how to safely choose used ECU modules and sensors for your car.

Benefits of Using a Used BMW Controller

Choosing a used BMW engine computer for E87/E90 models with the N45N engine is a solution that combines economic benefits with maintaining factory specifications. An original module from a dismantled vehicle:

• maintains compatibility with BMW's electronic architecture,
• reduces the risk of communication problems on the CAN bus,
• simplifies the service technician's work during adaptation and potential programming.

Compared to universal aftermarket replacements, an OEM controller is better suited to the specific vehicle configuration, resulting in more stable engine operation and fewer potential diagnostic errors.

Installation, Programming, and Service Aspects

Due to the nature of this component, the installation of an ECU computer in a BMW E87/E90 should be performed by a workshop with appropriate diagnostic equipment. In most cases, it is necessary to:

• adapt the controller's software to the specific vehicle,
• synchronize the module with the immobilizer and other control units,
• clear fault codes and perform post-installation adaptation procedures.

A professional approach to installation minimizes the risk of starting problems, inter-module communication issues, and onboard system malfunctions. If in doubt, it is advisable to consult a service specializing in BMW electronics or the seller's technical department.

Why Choose an Original BMW Module

An original BMW controller ensures consistency with other powertrain and electrical system components. Maintaining the factory control logic for the N45N engine translates to predictable vehicle behavior, proper throttle response, and correct cooperation with OBD diagnostic systems.

If you are looking for other electronic components for your car, you can explore our Electronic Control Modules and Controllers{data-blogs=category} category, where you will find a wide selection of controllers and modules suitable for various BMW models and other makes.