BMW F20 F30 F31 LCI 118i 318i B38 136HP Engine ECU Kit DME 8674265 + FEM + Key

BMW F20 F30 F31 LCI 118i 318i B38 136HP Engine ECU Kit DME + FEM + Key is a professional engine electronics set designed for vehicles with a manual transmission and petrol engine. The kit allows for a coherent replacement of key powertrain control components, facilitating the restoration of full vehicle functionality after a failure or during an engine swap.

Specifications and technical data

• SKU: 8674265-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8674265
• Substitutable numbers: 8674265, 12148674265, 8486839, 12148486839, 8648362, 12148648362, 8654454, 12148654454
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Application and compatibility

The presented kit is intended for BMW 1 Series F20 and 3 Series F30/F31 LCI (facelift) models in 118i and 318i versions with the 136 HP B38 engine. The set includes the DME engine control unit, the FEM module, and a matched key, which allows for maintaining the consistency of the immobilizer and factory security logic.

Thanks to this solution, you can perform an orderly replacement of the control electronics in vehicles with petrol engines and manual transmissions, minimizing the risk of engine start-up issues, bus communication errors, and conflicts in comfort systems.

Kit composition and the role of individual components

The kit includes the DME engine control unit responsible for processing sensor signals, controlling fuel injection, ignition, and B38 engine auxiliary equipment; the FEM module managing, among other things, start authorization and communication with the key; and a key matched to this set. This configuration ensures data consistency within the vehicle's security system.

Combining these elements into one package simplifies workshop operations – instead of selecting individual modules, you receive a logically linked set that serves as a solid foundation for further vehicle configuration according to specific equipment and region.

Benefits of using a pre-owned ECU kit

Choosing a pre-owned engine control unit kit with FEM and key is a cost-effective and technically predictable solution, provided it is correctly selected for the specific engine and transmission version. A set sourced from a single vehicle limits the need for deep immobilizer programming, which shortens repair time.

In practice, this means fewer potential points of incompatibility – the workshop can focus on adaptation and coding for the car's equipment instead of solving problems resulting from mixing modules of different origins. This is particularly important in modern BMWs, where powertrain electronics are highly integrated with the rest of the vehicle's architecture.

Installation requirements and service recommendations

When installing such a set, it is crucial to follow the correct procedure for disconnecting and connecting the electrical system, as well as performing the necessary diagnostic adaptations. It is recommended to use specialized BMW service software and experience in working with DME and FEM modules to correctly carry out coding and any necessary software updates.

Due to the nature of the product in the Electronic control modules and ECUs category, it is worth verifying the vehicle configuration compatibility (fuel type, transmission type, body version) before installation and planning full diagnostics after start-up, including checking error memory and performing road functional tests.

Technical support and electronics selection

If you want to deepen your knowledge about selecting and installing pre-owned control modules, how to verify compatibility, and the practical aspects of working with powertrain electronics, check out the Global Parts guide: Used automotive electronics – second-hand ECU modules and sensors. The article discusses, among other things, selection by OEM numbers, hardware and software compatibility, and the most common service questions.

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 controllers, comfort modules, or DME units, check out the available parts in the BMW electronic control modules and ECUs category.