Engine Bracket BMW F10 F11 LCI 518d 520d B47 Supporting Mount Left N/S 6859899

Engine Bracket BMW F10 F11 LCI 518d 520d B47 Supporting Mount Left N/S is an original component from the Engine mounts group, designed for installation on the left side of the power unit. It provides stable support for the B47 engine, reduces the transmission of vibrations to the body, and maintains the correct geometry of the drivetrain in BMW 5 Series F10/F11 LCI models with diesel engines.

Specifications and technical data

• SKU: 6859899
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6859899
• Substitutable numbers: 22116859899, 6859899, KZ
• Location on the vehicle: Left
• Category: Engine Mounts

Purpose and function in the drivetrain

The presented bracket, also known as an engine mount arm, operates in the area where the power unit is attached to the vehicle body on the left side. Its tasks include:

• transferring loads from the engine to the auxiliary body structure,
• maintaining the correct position of the engine relative to the transmission and half-shafts,
• working in conjunction with the engine mount to dampen vibrations and oscillations,
• limiting unwanted movement of the powertrain during acceleration and engine braking.

Thanks to its precisely selected geometry and rigidity, the bracket helps maintain the correct drivetrain alignment, which translates into stable handling and reduced stress on other system components.

Compatibility with BMW F10/F11 LCI 518d 520d B47

The component is designed to work with the B47 engine in 518d and 520d versions in F10 and F11 bodies after the facelift (LCI). This ensures a perfect fit with factory mounting points and compatibility with the auxiliary front frame and suspension design of these models.

In practice, installation involves replacing a worn or damaged bracket with a part of identical geometry, allowing for the restoration of the original powertrain alignment without the need to modify other components.

Benefits of using an original bracket

Using an original engine mount arm in a BMW 5 Series with a B47 engine provides a number of practical operational benefits:

• Stable engine mounting – limiting excessive movement of the power unit, which reduces the risk of damage to cables, hoses, and accessory components.
• Improved drivetrain refinement – proper interaction with the engine mount helps reduce vibrations felt in the cabin.
• Protection of other components – proper engine support relieves stress on transmission mounts, half-shafts, and auxiliary suspension elements.
• Maintaining factory geometry – preserving the design position of the engine promotes the proper operation of the drivetrain and exhaust system.

Characteristics and installation on the left side of the vehicle

The bracket is designed for installation on the left side of the vehicle, which is important both when selecting the part and when planning service work. In technical nomenclature, the left side refers to the driver's side in a left-hand drive car.

When replacing, it is recommended to:

• check the condition of the mating engine mount,
• inspect the mounting points on the body and engine for any damage,
• use the appropriate tightening torques in accordance with BMW service documentation.

Part condition and service application

The product comes from the used parts group, which allows for economical repair while maintaining the original design specifications. This type of component is particularly useful in situations where mechanical damage to the bracket has occurred, e.g., after a collision, impact with an obstacle, or long-term operation in difficult conditions.

Selecting the correct engine mount arm is important not only from the point of view of driving comfort but also safety – incorrect mounting of the power unit can lead to additional stress in the drivetrain and suspension.

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 arms, brackets, or mount supports, check the available parts in the BMW Engine mounts category.

To better plan service work on the drivetrain and understand the importance of accessory quality, it is worth reading the guide on our blog: Reliability under the star sign – how to take care of engine accessories in popular Mercedes-Benz C and E-Class models?, which discusses practical principles for selecting and maintaining key components.

If you are interested in a broader perspective on selecting original aftermarket elements and want to consciously choose used components for your car, our guide may be helpful: The best used car parts – a guide to the most frequently chosen original parts.