BMW F20 F30 F32 LCI 120i 320i 420i Petrol B48 184HP Engine ECU Unit DME 9894912

BMW F20 F30 F32 LCI 120i 320i 420i Petrol B48 184HP Engine ECU Unit DME is a factory-original electronic control module designed for BMW vehicles with automatic transmissions. This item from the Electronic control modules and ECUs category is responsible for precise engine management, ensuring stable performance, correct fuel dosing, and seamless integration with other vehicle systems. Thanks to its original design, it is a particularly beneficial solution for professional repairs or replacing a faulty ECU.

Specifications and technical data

• SKU: 9894912
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9894912
• Substitutable numbers: 9894912, 12149894912, 0261S21760, 0 261 S21 760
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the DME unit

The presented DME unit is designed to work with the 184 HP B48 petrol engine in BMW 1 Series F20, 3 Series F30, and 4 Series F32 LCI (facelift) models. As the central unit managing the powertrain, the module controls, among other things, the combustion process, fuel dosage, ignition timing, and communication with other electronic vehicle systems. A correctly selected ECU is crucial for maintaining engine performance characteristics, smooth throttle response, and proper cooperation with the automatic transmission.

Compatibility with petrol engines and automatic transmissions

The ECU has been configured to work with a petrol engine, which means that injection maps, ignition timing, and protection strategies are adapted to the specifics of a direct-injection unit. Integrated algorithms work with engine sensors to maintain stable operation across the full load range while maintaining appropriate refinement and efficiency.

At the same time, the module is intended for vehicles equipped with an automatic transmission. It is responsible for data exchange with the gearbox, which affects gear shift smoothness, kick-down response, and torque matching to the current gear. A properly selected DME unit is essential for resolving issues such as jerking, uneven engine operation, or communication errors between the engine and the transmission.

Application in BMW F20, F30, F32 LCI models

The discussed control module is intended for popular BMW compact and mid-size models, such as the 1 Series F20, 3 Series F30, and 4 Series F32 after the facelift. The 120i, 320i, and 420i versions with the 184 HP B48 engine use this type of ECU to maintain the factory driving characteristics typical of new-generation BMW petrol units. Using an original module allows for software consistency with the rest of the vehicle's installation, which facilitates diagnostics, coding, and potential service updates.

Product characteristics and condition

The presented ECU belongs to the Electronic control modules and ECUs group, meaning it is a component directly responsible for communication within the vehicle network and controlling key engine operating parameters. The product is used, which in practice means it must be matched to a specific vehicle through appropriate programming, adaptation, or coding in accordance with BMW procedures. Such modules are often chosen as an economical alternative for repairs when the priority is to maintain the original electronic architecture of the vehicle.

Professional application and installation aspects

Due to the advanced electronic design, installation of the DME unit in a BMW with a B48 engine and automatic transmission should be entrusted to a workshop with experience in diagnosing and programming control units. Proper installation includes, among other things, verifying compatibility, potential immobilizer synchronization, adaptation to the specific vehicle configuration, and checking communication on the CAN bus. A properly selected and configured module allows for restoring correct engine operation after a failure of the previous ECU, without interfering with the mechanical components of the powertrain.

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 engine control modules, transmission controllers, or other electronic management units, check out the available parts in the BMW electronic control modules and ECUs category.

To compare how different manufacturers approach maintaining brand character and using original electronic components, it is worth reading the article on our blog: Audi and pure emotion – how used modules and ECUs help maintain the brand's DNA, which shows how important it is to use the correct ECUs in modern cars.