BMW E90 E91 LCI 330d Diesel N57 245HP ECU Engine Kit DDE 8507136 CAS3 + Keys

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW E90 E91 LCI 330d Diesel N57 245HP ECU Engine Kit DDE CAS3 + Keys is a factory electronic engine control unit designed for versions with the N57 diesel engine and manual transmission. This component from the Electronic control modules and controllers group is responsible for precise engine management, ensuring correct injection parameters, boost pressure, and component protection. This is a solution for users who want to restore the proper operation of the control system without compromising on compatibility.

Specifications and technical data

• SKU: 8507136-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8507136
• Substitutable numbers: 9147226, 61359147226, 0281016285, 0 281 016 285, 8507136, 13618507136, 8510221, 13618510221, 8506086, 13618506086, 8506377, 13618506377, 7823973, 13617823973, 7823513, 13617823513, 8506444, 13618506444, 9395657
• Fuel type: Diesel
• Gearbox type: Manual
• Category: ECUs & Computer Modules

Purpose and function of the engine controller

The presented engine controller is dedicated to BMW 3 Series E90 LCI models in 325d and 330d versions with the N57 unit and manual transmission. The controller integrates signals from engine sensors, the injection system, and auxiliary equipment, and then uses them to control the operation of injectors, the turbocharger, the exhaust gas recirculation system, and other elements responsible for engine refinement and performance. This makes it possible to maintain stable operating parameters of the diesel unit under various load conditions.

Benefits of using an original BMW module

Using an original controller in a BMW E90 LCI with an N57 engine allows you to maintain the factory operating logic of all systems associated with the powertrain. Proper matching to the specific engine and manual transmission configuration reduces the risk of communication errors in the vehicle's bus and adaptation problems. For the user, this means predictable car behavior, correct throttle response, and proper cooperation with diagnostic systems.

Operating characteristics in a diesel engine with a manual transmission

In a diesel engine, the controller is responsible not only for the fuel dose but also for the cold start strategy, common rail pressure control, and cooperation with the exhaust gas cleaning system. In combination with a manual transmission, the module manages, among other things, idle speed stabilization, response to sudden load changes, and protection of the drivetrain against unfavorable operating conditions. A correctly selected engine controller helps maintain smooth engine operation, reduce jerking, and ensure predictable transitions between RPMs.

Condition, verification, and service application

The item comes from a used vehicle, making it an attractive cost-effective alternative to a new module while maintaining compliance with BMW factory specifications. This type of controller is often used in professional workshops for repairs following electronic damage, flooding, or electrical surges. After proper matching and configuration in the vehicle, it can effectively replace a damaged module, restoring full functionality to the engine control system.

BMW electronic control modules and controllers – expansion and repairs

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 engine controllers, comfort modules, or injection system management units, check the available parts in the BMW electronic control modules and controllers category.

More about the role of original modules in modern cars

Modern premium cars rely heavily on advanced electronics, and the quality of the modules used has a direct impact on driving characteristics and the driver's experience. If you are interested in how properly selected controllers and multimedia modules help maintain the vehicle's factory properties, it is worth reading the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which shows the importance of original components in maintaining the consistency of a car's character.