BMW E81 E87 LCI E90 116i 316i 1.6 N45N ECU Kit DME 7567321 + CAS3 + Key Manual

BMW E81 E87 LCI E90 116i 316i 1.6 N45N ECU Kit DME + CAS3 + Key Manual is a complete engine control kit designed for selected BMW 1 and 3 Series models with the 1.6 N45N engine and manual transmission. The set includes the DME module, CAS3 module, and a matched key, which facilitates the restoration of functional powertrain electronics after a failure or during an engine replacement. This solution allows for a consistent match of the immobilizer components and the engine control unit in one compatible package.

Specifications and technical data

• SKU: 7567321-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7567321
• Substitutable numbers: 12147591162, 12147591163, 12147567321, 12147585435, 12147585249, 12147581848, 12147582242, 12147581610, 12147557951, 12147581609, 7591162, 7591163, 7567321, 7585435, 7585249, 7581848, 7582242, 7581610, 7557951, 7581609, 0261201553, 0 261 201 553, 61356943834, 6943834
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and compatibility

The presented ECU kit is dedicated to BMW 1 Series E81/E87 LCI and BMW 3 Series E90 vehicles in 116i and 316i versions with the 1.6 N45N engine. Integrating the DME controller with the CAS3 module and key ensures system security consistency and proper communication with the vehicle's wiring, which is particularly important when replacing electronics after damage or starting issues.

The kit is configured for a manual transmission, ensuring that the engine control logic and interaction with powertrain components are adapted to the characteristics of a manual gearbox. Selecting the right kit for a specific powertrain configuration reduces the risk of errors, software incompatibilities, and adaptation problems.

Structure of the ECU DME + CAS3 + key kit

The set includes an electronic engine control module (DME), a CAS3 module responsible for start authorization, and a key that works with this set. This combination of components allows for the preservation of immobilizer data consistency, which in practice simplifies installation and reduces the need for extensive programming from scratch.

As an item in the Electronic control modules and controllers category, the kit is responsible for precise management of the engine's operation – from fuel injection and ignition control to monitoring engine performance parameters and communicating with other modules in the vehicle. Using original BMW components promotes system stability and correct diagnostics via factory service tools.

Service application and installation benefits

The complete ECU DME kit with CAS3 and key is particularly useful in situations where the engine controller has been damaged, there are issues with the immobilizer, or it is necessary to replace the entire electronics package after an engine swap. Using a single, matched set:

• simplifies the installation and configuration process compared to sourcing individual modules,
• reduces the risk of conflicts between the controller software and the CAS module,
• facilitates vehicle startup after repair, without the need for long-term coding of multiple elements.

For workshops specializing in the BMW brand, such a set is a practical service solution that allows for reduced diagnostic time and the restoration of full powertrain functionality. The end user gains a consistent electronics package that can replace a damaged or faulty factory set.

Characteristics of the used product

The offered set comes from a used vehicle, which allows for an economical restoration of engine electronics efficiency while maintaining the manufacturer's original specifications. Modules of this type are designed with a high durability margin, which is why, with proper selection and installation, they can continue to operate in a vehicle for a long time.

Before installation, it is recommended to perform standard diagnostics and verify compatibility with the specific car configuration, including comparing software parameters and vehicle equipment. Professional installation and potential software matching to the specific BMW unit help to fully utilize the kit's capabilities and reduce the risk of communication errors between modules.

Selection support and additional materials

When selecting a used ECU kit for a specific BMW, it is crucial to check compatibility by OEM number and interchangeable numbers, as well as to verify the engine and transmission configuration. Detailed tips on choosing and installing used controllers can be found in the Global Parts guide: Used automotive electronics – second-hand ECU modules and sensors, where selection by VIN/OEM, hardware and software compatibility, and practical installation examples are discussed.

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