BMW E81 E90 E91 E60 Alternator Generator Petrol 150A 7550967

BMW E81 E90 E91 E60 Alternator Generator Petrol 150A is an original component from the Alternators and generators group, designed for electrical systems in BMW cars with petrol engines. It ensures a stable power supply for the onboard electrical system and proper battery charging, which is crucial for the reliable operation of all vehicle systems.

Specifications and technical data

• SKU: 7550967-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7550967
• Substitutable numbers: 7550967, 12317550967, 7551256, 12317551256, 0121615010, 0 121 615 010
• Fuel type: Petrol
• Part type: Alternator
• Category: Alternators & Generators

Purpose and function in the BMW electrical system

The presented alternator is dedicated to BMW E81, E90, E91, and E60 series models with petrol engines. As a 150A capacity generator, it is designed to work with the extensive electrical system typical of these BMW generations – including comfort systems, safety systems, and advanced onboard electronics.

A properly selected alternator in these models is responsible for:

• maintaining stable voltage in the system while driving,
• efficient battery charging under various loads,
• protecting engine control units and safety systems from voltage drops.

Benefits of using an original BMW alternator

Using an alternator that complies with BMW factory specifications allows for maintaining the correct operating parameters of the charging system without the need for installation modifications. Appropriate current characteristics and matching to the petrol engine accessories minimize the risk of overloads and malfunctions of the electronics.

Key advantages include:

• compatibility with factory mounts and accessories in the engine compartment,
• adaptation to the operating characteristics of BMW petrol units,
• stable power supply for consumers under high electrical load.

Condition, origin, and installation aspects

The alternator is a used component, which allows for an economical replacement while maintaining the original BMW specification. This type of subassembly is particularly attractive for maintenance repairs when maintaining consistency with the factory charging system design is a priority.

During installation, it is worth paying attention to:

• correct tension of the accessory belt,
• cleanliness and condition of electrical connectors,
• checking the charging system after starting the engine (measuring voltage under load).

BMW alternators and generators – expansion and service of the charging system

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 generators, alternators with different capacities, or compatible pulleys, check the available parts in the BMW alternators and generators category.

Technical support and parts knowledge

When working with advanced electrical systems and modern powertrains, it is worth using reliable sources of knowledge about the design and evolution of solutions used by manufacturers. To compare solutions used in other premium brands and better understand the development of electronics and engine accessories, you can read the article on the evolution of the Mercedes S-Class and changes in component design over the years, which shows how manufacturers develop their systems and what significance this has when selecting spare parts.