BMW 1 3 Series F20 F21 M135i F30 F31 335i N55 Engine Mount Left N/S 6787659

BMW 1 3 Series F20 F21 M135i F30 F31 335i N55 Engine Mount Left N/S is an original BMW engine mount designed for installation on the left side of the vehicle. This component stabilizes the powertrain, reduces vibrations, and improves the refinement of the drivetrain, resulting in a more comfortable and predictable driving experience.

Specifications and technical data

• SKU: 6787659
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6787659
• Substitutable numbers: 6787659, 22116787659, 8416821, 22118416821, EM
• Location on the vehicle: Left
• Category: Engine Mounts

Purpose and compatibility

The presented engine mount is designed for BMW 1 Series F20/F21 M135i and 3 Series F30/F31 335i models equipped with the N55 engine. The location on the vehicle is the left side, which is crucial when selecting parts for a specific body configuration and drivetrain. Using an original BMW solution ensures proper load distribution and compatibility with factory mounting points.

Function and role of the engine mount

Engine mounts are responsible for the flexible connection between the powertrain and the chassis. In the case of high-performance units such as the N55 in the M135i and 335i, a properly selected left engine mount:

• dampens vibrations transmitted from the engine to the body,
• stabilizes the position of the powertrain during acceleration and engine braking,
• limits unwanted lateral and longitudinal movement,
• supports drivetrain precision and cabin acoustic comfort.

As a result, the driver experiences more consistent vehicle behavior, and components interacting with the engine are less exposed to stresses resulting from excessive powertrain displacement.

Benefits of using an original BMW engine mount

Using an original mount from the Engine mounts category to replace a worn-out part allows you to restore the factory performance of the drivetrain. Key advantages include:

• factory fitment to the mounting geometry in F20/F21 M135i and F30/F31 335i models,
• maintenance of proper stiffness and flexibility along the N55 engine's operating axis,
• reduction of vibrations felt on the steering wheel, floor, and in the cabin,
• more predictable vehicle behavior during dynamic driving.

The item in used condition is a good choice for repairs where maintaining the original BMW design while optimizing service costs is a priority.

Professional selection and installation

To fully utilize the potential of this engine mount, it is worth ensuring proper diagnostics of the entire powertrain mounting system. In practice, this means checking both engine mounts and other powertrain support points. The replacement of the left mount should be performed in accordance with BMW service procedures, including the correct tightening sequence and bolt torque, which ensures proper engine alignment relative to the chassis.

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 brackets, mounts, or vibration-damping elements, check the available parts in the BMW Engine mounts category.

Technical support and repair knowledge

When working with high-power diesel and gasoline units, similar to the popular OM642 engine, it is crucial to understand the impact of accessories and mounting elements on the overall refinement of the system. More about how properly selected components restore performance and comfort can be found in the article "Second life of the Mercedes OM642 engine – how injectors and turbochargers restore the power of the 3.0 V6 CDI", which well illustrates the importance of a comprehensive approach to drivetrain regeneration.

In the case of older BMW F-series models, where the availability of new parts can be limited, proven salvaged parts are a practical solution. This issue is discussed more broadly in the post "No parts at the dealership? How to handle the repair of older models using salvaged parts", which provides tips on how to consciously choose used components and optimize repair costs.