BMW E81 E90 E91 E60 Petrol Alternator Generator 150A 7550967

BMW E81 E90 E91 E60 Petrol Alternator Generator 150A is an original component from the Alternators and generators group, designed for BMW vehicles with petrol engines. It ensures a stable power supply for the electrical system and proper battery charging, which translates into trouble-free vehicle operation.

Specifications and technical data

• SKU: 7550967-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7550967
• Substitutable numbers: 12317543083, 7543083, 12317542529, 7542529, 7550967
• Fuel type: Petrol
• Category: Alternators & Generators

Purpose and function of the alternator

The presented alternator is structurally matched to BMW E60, E81, and E90 series models powered by petrol. Its task is to convert the engine's mechanical energy into electrical energy, which is necessary for the operation of all onboard consumers – from control systems and lighting to comfort systems.

Thanks to its appropriately selected current output, the alternator maintains a stable voltage in the system, which reduces the risk of power drops, starting problems, or interference in the vehicle's electronics.

Key technical advantages

The 150A output alternator provides a solid power reserve for the typical electrical configuration of BMW cars from this generation. This is particularly important in vehicles equipped with extensive electronics, where the energy demand is higher than in older designs.

• Stable battery charging under varying electrical loads.
• Adequate current reserve for additional consumers (e.g., multimedia systems, heated windows, seats).
• Compatibility with the electrical system of BMW petrol engines from the discussed model series.

An alternator configured in this way allows for the proper operation of engine control systems and safety systems, which has a direct impact on the reliability of daily use.

Vehicle integration and compatibility

The alternator has been designed as an OEM component for selected BMW models, which means it is a perfect fit in terms of mounting, electrical connections, and cooperation with factory engine equipment. As a result, installation is similar to replacing a factory component, without the need for system modifications.

The presence of a dedicated OEM part number and associated interchangeable numbers facilitates the selection of the correct alternator based on service documentation or vehicle data. This is especially important when working with modern BMW electronics, where parameter compliance is crucial for proper communication with control modules.

Characteristics of the used component

The offered alternator is a used component, which in practice means an attractive compromise between cost and functionality. Such components are frequently chosen for maintenance repairs when the priority is to restore full efficiency of the charging system while maintaining a reasonable budget.

In the case of alternators for BMW, it is important to maintain structural compliance with the original equipment – using parts from the same product group helps reduce the risk of problems with installation and cooperation with the vehicle's electronics.

Technical support and additional information

When selecting an alternator for a specific BMW unit, it is worth using the manufacturer's markings and vehicle data, such as engine type or production year. In case of doubt, it is helpful to compare parameters and reference numbers with service documentation, which minimizes the risk of purchasing an unsuitable component.

If you are planning a comprehensive repair or upgrade of the electrical power supply area in your BMW and need other components from the same group, such as alternators with different capacities, generators, or related charging components, check the available parts in the BMW Alternators and generators category.

Additional tips regarding the selection and installation of used electrical and electronic components in a car, as well as practical advice on compatibility and OEM markings, are provided in the guide article Used automotive electronics – modules and sensors in service practice.