BMW E81 E87 LCI E90 116i 316i 1.6 N45N ECU Control Unit DME 7567321 Manual

BMW E87 E90 116i 316i N45 Engine Control Unit 7567321 is an original electronic engine control unit designed for BMW 1 Series and 3 Series models with an N45 engine and manual transmission. This component from the Electronic Control Modules and Units category is responsible for precise engine management, ensuring stable parameters and proper interaction with other vehicle systems. It's a solution for users who want to restore the correct operation of the powertrain while maintaining the original BMW characteristics.

Specifications and technical data

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

Purpose and Compatibility

The presented engine control unit is designed to work with the N45 engine in BMW E87 and E90 models, specifically the 116i and 316i versions equipped with a manual transmission. It controls key engine operating parameters such as fuel injection, ignition timing, and adaptive corrections, which translates to predictable vehicle behavior and consistency with the factory software.

By using an original control unit from the BMW group, compatibility with the vehicle's electrical architecture, wiring harness, and other electronic modules is maintained. The presence of dedicated interchangeable part numbers allows for selecting the appropriate variant for a specific car configuration without the need for installation modifications.

Function in the Powertrain

The engine control unit acts as the central processing unit for the entire powertrain. Based on signals from sensors, it analyzes operating conditions in real-time and controls actuators such as injectors and the ignition system. For the N45 engine, this is particularly important for:

• maintaining stable idle speed,
• smooth power delivery across the entire RPM range,
• proper interaction with the manual gearbox,
• exhaust emission control according to factory specifications.

A functional control unit helps to reduce typical symptoms of electronic malfunctions, such as rough engine running, power loss, or warning lights illuminating. Replacing a damaged module with the correct engine control unit restores predictable throttle response and proper communication with other vehicle systems.

Benefits of Using an Original Control Unit

Using an original engine control unit for a BMW with an N45 engine offers a range of practical benefits:

• Factory Fitment – design and software tailored to the specific engine and manual transmission configuration.
• Electrical System Compatibility – no need for wiring or connector modifications, maintaining compatibility with other modules.
• Diagnostic Adaptability – the control unit works with genuine BMW service tools, facilitating coding and configuration.
• Stable Engine Operation – correct control of powertrain operating parameters reduces the risk of incorrect readings and errors.

As a component from the Electronic Control Modules and Units category, this engine control unit is crucial for maintaining the characteristic BMW throttle response and predictable vehicle behavior in everyday use.

Product Characteristics and Installation

The offered control unit is a used part, allowing for an economical repair of the powertrain while maintaining the original manufacturer's specifications. Before installation, it is recommended to perform a standard diagnostic procedure and prepare the vehicle for module adaptation according to workshop practices for BMW control units.

Due to its connection with the immobilizer and other comfort and safety modules, the installation of the engine control unit should be performed by a workshop experienced in BMW electronics and with access to appropriate diagnostic software. This ensures correct coding of the control unit, its assignment to the vehicle, and verification of communication within the vehicle network.

Expanding the Control System in BMW

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same category, such as additional control units, engine management modules, or auxiliary electronic units, check the available parts in the BMW Electronic Control Modules and Units category.

For users interested in a broader perspective on the importance of original electronic modules in modern premium cars, including the impact of control units on maintaining brand DNA, an article on our blog may be helpful: Audi and Pure Emotion – How Used Electronic Modules and Parts Help Maintain Brand DNA.