BMW E90 E91 E92 E93 LCI Starter Motor Actuator Generator 8570238

BMW E90 E91 E92 E93 LCI Starter Motor Actuator Generator is an original component from the Starter Motors group, designed for use in post-facelift (LCI) BMW 3 Series models. This OEM solution ensures proper engine starting parameters, stable operation of the electrical system, and compatibility with the vehicle's factory installation.

Specifications and technical data

• SKU: 8570382
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8570382
• Substitutable numbers: 8515900, 12418515900, 12418570382, 8570382, 12418570238, 8570238
• Part type: Starter Motor
• Category: Starter Motors

Purpose and function in the powertrain

The presented starter motor with actuator and generator has been designed as an integral part of the starting system in BMW E90, E91, E92, and E93 LCI versions. It is responsible for the dynamic starting of the engine, proper engagement with the flywheel ring gear, and stable transmission of starting torque while maintaining factory electrical parameters. Thanks to a design that meets the manufacturer's requirements, the starter motor works with the original control system, power cable installation, and vehicle safety features, which reduces the risk of errors in onboard systems and facilitates diagnostics if necessary.

Construction and advantages of using OEM BMW parts

The OEM solution used in this starter motor means maintaining the factory housing geometry, properly selected gear ratios, and the correct operating characteristics of the actuator. This configuration translates into:

• proper fitment with the engine block mounts,
• appropriate cooperation with the vehicle's electrical system,
• maintenance of starting parameters in accordance with the manufacturer's specifications. The original design reduces the risk of excessive voltage drops, improper engagement, or premature wear of mating components. This is particularly important in modern BMW units, where the starting system is linked to the engine control electronics and safety systems.

Condition, fitment, and installation

The component comes from the used BMW parts group, which allows for combining an attractive price with the preservation of the original manufacturer's specification. Before installation, it is recommended to perform a standard verification of the vehicle's electrical system, the condition of power cables, and ground points to fully utilize the starter motor's capabilities. The starter motor is intended for direct installation in the appropriate versions of the BMW E90, E91, E92, and E93 LCI, maintaining factory mounting points. In practice, this means there is no need for mechanical or electrical modifications, provided that the part selection was made in accordance with the OEM number and interchangeable numbers indicated in the technical specification.

Why choose an original BMW starter motor

Choosing an original BMW starter motor instead of a random replacement primarily means greater predictability of the starting system's operation. The OEM part has been designed for specific loads, engine characteristics, and electrical system parameters, which translates into:

• stable engine starting under various operating conditions,
• better cooperation with control electronics and safety systems,
• reduced risk of starting problems after component replacement. Additionally, using an original solution facilitates future diagnostics at a service center – the starter motor's operating parameters fall within the range provided by the manufacturer, which allows for faster identification of potential other faults in the powertrain.

Expanding BMW starting system support

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional starter motors, related actuators, or compatible generators, check the available parts in the BMW Starter Motors category. When working on the powertrain, it is also worth paying attention to the condition of the drive axle and differential – in many cases, using used OEM components is a more beneficial solution than installing uncertain replacements. You can find more practical information on this topic in the article Humming differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement.