BMW F10 F20 F30 LCI Alternator Generator Unit Diesel B47 7646814

BMW F10 F20 F30 LCI Alternator Generator Unit Diesel B47 is an item from the Alternators and generators group, designed for BMW powertrains with a B47 diesel engine. The offered component is a solution for users looking for a verified, original component for the charging system in modern B47 units, ensuring stable power supply for the vehicle's electrical system.

Specifications and technical data

• SKU: 7646814-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7646814
• Substitutable numbers: 12317646814, 7646814
• Fuel type: Diesel
• Part type: Alternator
• Category: Alternators & Generators

Application and compatibility

The presented alternator is intended for BMW F-series models with the LCI facelift, which use the B47 diesel engine. The design of the charging system in these units requires a properly selected generator that works with advanced onboard electronics, comfort systems, and an extensive network of control units.

Thanks to its fitment to the electrical architecture of the F10, F20, and F30 LCI platforms, the alternator ensures proper cooperation with the factory control system, which reduces the risk of errors in diagnostic systems and voltage problems in the installation.

Technical and functional characteristics

The alternator from this series has been designed to operate in the demanding conditions of diesel units, where resistance to thermal loads and vibrations is essential. The applied design supports stable battery charging at variable engine speeds, which is important both in city driving and on longer routes.

Key features of this component include:

• adaptation for operation with a diesel engine,
• cooperation with the extensive electrical system of modern BMW models,
• designed for the requirements of B47 units in facelift (LCI) versions.

This type of alternator is an essential element for the proper operation of safety systems, comfort features, and onboard electronics, which is why its correct selection has a direct impact on the reliability of the entire vehicle.

Condition and benefits of choosing a used alternator

The offered alternator is in Used condition, which means it has been dismantled and was previously used in a vehicle. Choosing such a solution allows for a significant reduction in repair costs compared to a new part, while maintaining the original manufacturer's specifications and proper fitment to the powertrain.

A used BMW alternator from this series is a good solution for users who:

• want to maintain consistency with the factory vehicle configuration,
• are looking for parts with parameters consistent with the original equipment,
• are planning an economical but technically correct repair of the charging system.

Why choose BMW Alternators and generators

Elements from the Alternators and generators group dedicated to BMW are designed with a focus on precise fitment to the specific engine architecture and electrical system. In practice, this means proper mounting, correct cooperation with the accessory belt, and compliance with the charging parameters specified by the manufacturer.

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 alternators with different capacities, generators for other engine versions, or compatible charging system components, check the available parts in the BMW Alternators and generators category.

Practical tips for selection and installation

When choosing an alternator for the B47 engine, it is worth paying attention to compatibility with the body version and the vehicle's production year to ensure proper fitment to the installation and accessories. It is recommended to have the installation performed by a qualified service center, which will verify the condition of the drive belt, tensioner, and electrical connections, minimizing the risk of subsequent failures.

For drivers interested in optimizing operating costs and a conscious approach to repairs, guide materials regarding economical vehicle maintenance may also be helpful – for example, the article on economical operation and savings in mechanical and body repairs shows how to plan service using properly selected parts.