BMW F36 LCI Petrol 430i B48 Engine Module ECU Kit DME 8489449 Keys FEM Automatic

BMW F36 LCI Petrol 430i B48 Engine Module ECU Kit DME Keys FEM Automatic is an advanced set from the Electronic control modules and ECUs category, designed for petrol vehicles with an automatic transmission. The kit ensures the consistency of key powertrain electronics, facilitating professional repair or replacement of the engine control system in modern BMW models.

Specifications and technical data

• SKU: 8489449-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8489449
• Substitutable numbers: 8489449, 12148740343, 8740343, 0261S19743, 0 261 S19 743, 61358781423, 8781423, KZ
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and kit configuration

The presented kit is dedicated to the BMW 4 Series Gran Coupé F36 LCI (facelift) in the 430i version with a B48 petrol engine and automatic transmission. The set includes the ECU DME engine control module, the FEM module, and matched keys, which allows for maintaining the consistency of the immobilizer, coding, and start-up logic in one compatible package.

Thanks to this solution, it is possible to replace the entire powertrain control system in an orderly manner, while maintaining compatibility between the engine electronics, the body module, and the key authorization system. This is particularly important for repairs following electronic damage, engine replacement, or restoring full vehicle functionality after a controller failure.

Key technical advantages

The kit has been designed to work with a petrol unit and an automatic transmission, ensuring appropriate operating maps, gear shifting logic, and communication with other modules in the vehicle. In practice, this means:

• maintaining the correct operating characteristics of the B48 engine in the 430i version,
• proper cooperation with the automatic transmission,
• consistency of the immobilizer system thanks to the linking of the ECU, FEM, and keys,
• reduction of the risk of software conflicts between modules.

The complete configuration of elements in one set facilitates workshop work, shortens diagnostic time, and minimizes the need to search for individual components with compatible software.

Application in repairs and upgrades of the BMW F36 LCI 430i

This engine control kit with the FEM module and keys will work well both for standard replacement of a damaged ECU and for more complex projects related to powertrain electronics repair. It is particularly useful in situations where the existing controller has been severely damaged, and restoring its configuration is difficult or unprofitable.

For workshops specializing in the BMW brand, such a kit is a convenient, orderly solution that allows focusing on proper installation, adaptation, and road testing, rather than on tedious matching of individual modules. Powertrain electronics consistency translates into stable engine operation, correct bus communication, and predictable vehicle behavior in daily use.

BMW electronic control modules and ECUs – expansion and selection

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional controllers, body modules, or powertrain management systems, check the available parts in the BMW electronic control modules and ECUs category.

Retrofit and use of used modules

In the case of projects related to retrofitting or changing equipment configuration, used control modules can be a cost-effective solution, provided they are correctly selected and professionally coded. It is worth learning about best practices in this area – they are described in more detail in the article on retrofitting in BMW and VAG group vehicles, available here: Retrofitting in VAG and BMW group cars: How to affordably upgrade your car using used parts from higher versions?.

Substantive support and additional information

When working with powertrain electronics, it is crucial to maintain the original character of the vehicle and compliance with the manufacturer's factory standards. In the context of premium brands such as Audi or BMW, it is worth familiarizing yourself with the approach to using original, used components described in the article: Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?. This allows for a better understanding of how properly selected electronic modules affect the car's behavior and its long-term reliability.