Engine Mount BMW E90 E91 E92 LCI F10 F20 Aggregate Support Bracket N47N Diesel

Engine Mount BMW E90 E91 E92 LCI F10 F20 Aggregate Support Bracket N47N Diesel is an original mounting component designed for BMW diesel engines, responsible for the stable and precise seating of the alternator on the engine block. Its robust construction ensures secure support for the auxiliary equipment, which translates into smooth operation of the accessory drive and the reduction of unwanted vibrations. This is a practical solution for users looking to restore the correct alternator mounting geometry following damage or wear of the factory bracket.

Specifications and technical data

• SKU: 8506863
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 11168506863
• Substitutable numbers: 11168506863, 8506863
• Fuel type: Diesel
• Category: Engine Mounts

Purpose and function in the powertrain

The alternator support bracket in BMW E90 LCI, F20, F21, and F30 models with diesel engines is responsible for the stable connection between the alternator and the engine block. A correctly selected component:

• maintains the proper position of the alternator relative to the crankshaft pulley,
• ensures correct tension of the accessory belt,
• limits the transfer of vibrations from the engine to the alternator,
• minimizes the risk of misalignment leading to accelerated wear of the belt and bearings.

As a result, the charging system operates in a predictable and stable manner, which is important for both the durability of the equipment and the comfort of vehicle operation.

Benefits of using an original BMW alternator bracket

Using an alternator bracket sourced from BMW allows for maintaining factory fitment to the engine block and accessories. In practice, this means:

• compatibility with factory mounting points in diesel engines,
• correct geometry of the belt and pulley system,
• no need for modifications or adjustments during installation,
• maintenance of charging system performance parameters in accordance with manufacturer specifications.

A used component of this class is a reasonable choice for repairs in diesel-powered cars, where both compatibility and service economy are important.

Condition, installation, and service application

The offered alternator bracket is in used condition, which allows for an economical replacement of a damaged or deformed bracket while maintaining original BMW specifications. The component is intended for installation in vehicles equipped with diesel engines, where mechanical and thermal loads are higher than in gasoline units; therefore, the proper selection of the bracket is essential for the durability of the entire system.

Before installation, a standard service procedure is recommended, including inspection of mating surfaces, threads, and the interacting mounting points of the alternator and accessories. A correctly installed bracket restores proper belt routing and eliminates issues with noise or excessive vibrations in the alternator area.

Fitment by OEM number and selection support

To ensure that the alternator bracket is fully compatible with your specific engine version and body type, it is worth verifying compatibility using the OEM number and vehicle data. A detailed guide describing the process of selecting parts by number and vehicle identification may be helpful – you can find it in the article Guide: how to choose the right car part by VIN and OEM number. This will minimize the risk of purchasing a component with different geometry or different mounting point spacing.

Related components in the BMW engine mounting area

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 brackets, fasteners, or other components responsible for supporting the powertrain, check the available parts in the BMW Engine Mounts category.

More about diesel engine accessories and exhaust gas recirculation

In diesel engines, the proper cooperation of all accessory components is particularly important – from the alternator and intake system to the exhaust gas recirculation system. If you want to better understand how modern diesel units work and when it is worth choosing used components, read the article EGR: what it is and why it is worth considering used EGR valves. This will allow you to consciously plan repairs and upgrades for your BMW vehicle.