Audi A4 B8 3.0 TDI 240HP Engine ECU Kit Ignition + Key 8K0907401F Manual

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B8 3.0 TDI 240HP Engine ECU Kit Ignition + Key is a complete, used solution from the Electronic control modules and ECUs category, designed for operation with a diesel engine. It is a practical choice for workshops and users who need a coherent set of engine electronics matched to a specific powertrain configuration.

Specifications and technical data

• SKU: 8K0907401F-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0907401F
• Substitutable numbers: 8K0907401F, 8K0 907 401 F, 8K0909131C
• Fuel type: Diesel
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and technical configuration

The presented ECU kit is dedicated to the Audi A4 B8 generation with a 3.0 TDI 240HP engine, working with a manual transmission. The kit includes the engine control unit, ignition system components, and a key, which makes it easier to match the powertrain electronics to a specific vehicle without the need to source individual modules.

The electronics are designed to work with a diesel engine, ensuring that the control logic for fuel dosage, boost pressure, and engine protection systems is consistent with the requirements of this engine version.

Benefits of using a complete ECU kit

Using a complete engine control unit kit with an ignition module and key helps reduce issues with immobilizer matching, key synchronization, and vehicle network communication. In practice, this translates into:

• consistency of electronics within the powertrain,
• easier adaptation in a vehicle with a manual transmission,
• reduced risk of software conflicts between modules,
• time savings during diagnostics and startup after installation.

For workshops specializing in the Audi brand, such a kit is a convenient service solution that allows for faster execution of repairs related to engine electronics.

Characteristics of the used control module

The offered item comes from an operational vehicle, which means it is a used ECU kit. Such components are often chosen as an economical alternative to new controllers, especially for premium segment cars where the cost of brand-new modules is high.

Electronics from this group, when correctly selected in terms of engine version, fuel type, and transmission type, allow for maintaining the factory performance parameters of the engine while simultaneously reducing repair costs.

Selection, compatibility, and installation aspects

When selecting an engine control unit for an Audi A4 B8, it is crucial to match it to the specific configuration: 3.0 TDI 240HP engine, diesel fuel, and manual transmission. It is recommended to verify compatibility by the OEM number and interchangeable numbers based on service documentation or manufacturer catalogs, as well as to compare the vehicle's equipment configuration.

In practice, installing a kit that includes the ECU, ignition module, and key facilitates the process of immobilizer adaptation and vehicle network communication; however, it is always worth planning the final configuration using an appropriate diagnostic tester. Professional installation at a specialized service center helps minimize the risk of errors and ensures stable operation of the powertrain.

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

Technical support and additional information

When working with used engine electronics, it is particularly important to correctly match the module to the specific car, taking into account the VIN, OEM part number, software version, and equipment configuration. These issues have been discussed in more detail in the Global Parts guide – Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which describes selection by VIN/OEM, HW/SW compatibility issues, installation basics, and the most frequently asked user questions.

For owners of cars from the 1998–2012 model years, including Audi models, who plan to restore the efficiency or refresh their car using second-hand parts, the article The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 period may also be helpful, presenting practical modernization scenarios using electronic components.

Summary

Audi A4 B8 3.0 TDI 240HP Engine ECU Kit Ignition + Key is a functional service solution from the Electronic control modules and ECUs category, intended for a diesel engine. The complete nature of the kit facilitates the matching of powertrain electronics, shortens repair time, and allows for controlled reduction of vehicle maintenance costs while maintaining the correct engine control logic.