BMW E81 E90 E91 E60 LCI Petrol Alternator Generator 180A 7550968

BMW E81 E90 E91 E60 LCI Petrol Alternator Generator 180A is an original component from the Alternators and generators category, designed for BMW vehicles with petrol engines. It ensures a stable power supply for the vehicle's electrical system and proper battery charging, which translates into trouble-free operation and reliable starting in daily driving.

Specifications and technical data

• SKU: 7555926
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7555926
• Substitutable numbers: 12317555926, 7555926, 12317551254, 7551254, 7550968, 7551256, 12317551256
• Fuel type: Petrol
• Category: Alternators & Generators

Purpose and compatibility

The presented alternator has been designed for BMW E60 LCI, E81, and E90 models powered by petrol fuel. The OEM design guarantees a proper fit to factory mounts, correct cooperation with the accessory belt and engine control system, without the need for modifications or adaptations.

Thanks to the use of dedicated mounting points and appropriately selected operating parameters, the alternator maintains stable voltage across the entire engine speed range, which is crucial for the operation of control units, safety systems, and comfort equipment.

Operating parameters and role in the electrical system

The alternator in a BMW petrol engine is responsible for converting mechanical energy from the crankshaft into electrical energy, powering all consumers in the vehicle. In practice, this means:

• maintaining an appropriate battery charge level while driving,
• stable power supply for injection and ignition systems,
• safe operation of ABS, ESP, and other electronic modules,
• proper functioning of lighting, air conditioning, and multimedia equipment.

A properly selected alternator minimizes the risk of voltage drops, flickering lights, or starting problems, which has a direct impact on the reliability of the electrical system in your BMW.

Condition, origin, and benefits of choosing OEM parts

The offered item is a BMW part from the Alternators and generators category in used condition, which allows you to combine reasonable cost with the preservation of factory build quality. Original components from this brand are characterized by precise fitment, correct charging characteristics, and compatibility with engine control software.

Choosing a used OEM alternator is a good solution for service repairs when you want to maintain factory operating parameters while reducing costs compared to a new part. An additional advantage is the presence of dedicated part numbers and interchangeable numbers, which facilitates unambiguous identification and selection for a specific vehicle configuration.

Professional installation and operation

To fully utilize the potential of the alternator, installation by an experienced service center is recommended, including checking the condition of the accessory belt, tensioner, and ground connections. A correctly installed alternator:

• ensures uniform battery charging across all load ranges,
• reduces the risk of overcharging or undercharging the system,
• stabilizes the operation of onboard electronics in both city and highway conditions.

Thanks to this, the electrical system remains more resistant to overloads, and daily vehicle operation is predictable and comfortable.

BMW alternators and generators – expansion and part selection

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 additional alternators, generators, or related mounts, check out the available parts in the BMW Alternators and generators category.

For drivers interested in a broader look at the construction and operation of vehicle systems, including how electrical components interact with the vehicle steering system, an article describing the principles of operation and common faults of the steering and power steering system may be helpful – you can find it here: Steering and power steering – how does it work and what breaks?.