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 complete engine control kit designed for petrol BMW versions with a manual transmission. The set includes the DME engine control module, the FEM module, and a key, allowing for a seamless replacement of the drivetrain electronics in a single service process. This solution is particularly beneficial when replacing a damaged controller or matching a used engine to an existing installation.

Specifications and technical data

• SKU: 8674265-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8674265
• Substitutable numbers: 8674265, 12148674265, 8486839, 12148486839, 8648362, 12148648362, 8654454, 12148654454, 6825541
• Fuel type: Petrol
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the ECU kit

The presented engine control kit is dedicated to BMW 1 Series F20 and 3 Series F30/F31 LCI (facelift) models equipped with the 136 HP B38 unit and a manual transmission. The combination of the DME, FEM module, and key ensures consistency of the immobilizer system, comfort features, and drivetrain control, which significantly facilitates the installation process and subsequent vehicle configuration.

In practice, this means that the key components responsible for start authorization, engine management, and vehicle network communication are already synchronized. As a result, the kit provides a solid foundation for restoring full drivetrain functionality after an electronics failure or during major upgrade projects.

Benefits of using the complete DME + FEM + key kit

Using a complete engine control kit in a petrol BMW with a manual transmission offers a number of practical service benefits:

• consistency of drivetrain electronics and vehicle security (DME, FEM, and key from a single set),
• reduction of issues with immobilizer matching and module synchronization,
• easier workshop workflow when adapting a used B38 engine,
• possibility to restore proper operation of the petrol unit without the need to source components from different origins.

For the user, this means a more predictable repair process and a higher chance of stable, repeatable engine performance after service work is completed. The completeness of the kit translates into fewer potential points of conflict in the electronics configuration.

Technical characteristics in the context of the B38 engine

The 136 HP B38 engine is a modern, turbocharged petrol unit where the DME controller is responsible for precise management of fuel injection, ignition, and auxiliary equipment. In combination with a manual transmission, it requires appropriately matched software and configuration to maintain correct operating parameters across the entire load range.

In this context, the ECU kit with FEM and key is a crucial element of the drivetrain – not only starting the engine but also idle stability, throttle response, and cooperation with other vehicle systems depend on the proper operation of these modules. Using original BMW electronic control modules and controllers allows for maintaining driving characteristics consistent with the manufacturer's factory specifications.

Condition, verification, and application in service practice

The offered kit falls under the Electronic control modules and controllers category and is a used item, which in workshop practice means that a standard diagnostic procedure is required after installation. Before installation, it is recommended to perform a full error code read, check vehicle network communication, and verify configuration compatibility with the specific vehicle equipment version.

In a professional service, this type of kit is particularly useful for:

• repairs following engine electronics damage,
• replacing the B38 power unit within the same body generation,
• resolving issues with the immobilizer and start authorization,
• restoring factory operating parameters of the petrol drivetrain.

Related categories and technical materials

If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other components from the same group, such as additional controllers, engine management modules, or comfort units, check out the available parts in the BMW electronic control modules and controllers category.

For a better understanding of the role of electronics in modern drivetrains and the impact of original components on the car's driving characteristics, it is worth reading the blog article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which discusses how properly selected modules and electronic components allow for preserving the vehicle's factory properties.