BMW 1 Series E82 120d N47 Front Left N/S Spring Strut Brake Suspension Leg Hub

BMW 1 Series E82 120d N47 Front Left N/S Spring Strut Brake Suspension Leg Hub is a complete solution for the front driver-side suspension in a BMW 1 Series E81 with an N47 engine. Combining the shock absorber with the steering knuckle assembly ensures consistent geometry, stable handling, and predictable vehicle behavior during braking and cornering. It is a practical choice when replacing suspension components after a collision or due to advanced wear of the factory part.

Specifications and technical data

• SKU: 6786021-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6786021
• Substitutable numbers: shockabsorber, leg, 31316786021, 6786021, 34216768693, 6768693, 31216793923, 6793923, 31216764443, 6764443, 34116854998, 6854998, 3411676464334116772669, 6772669, 6764643, 31316782855, 6782855
• Location on the vehicle: Front, Left
• Category: Other Steering & Suspension Parts

Purpose and function in the chassis system

The presented component is designed for installation on the front left side of the vehicle, responsible for damping vibrations and maintaining the correct position of the wheel relative to the body. The shock absorber-knuckle assembly transfers loads from the road to the chassis, influencing:

• driving stability at higher speeds,
• braking efficiency and even tire wear,
• steering precision in corners,
• ride comfort on uneven surfaces.

By maintaining the factory chassis geometry, replacing it with an original shock absorber and steering knuckle assembly helps restore the predictable handling characteristic of BMW vehicles.

Original origin and installation compatibility

The component comes from the BMW OE line, meaning it was designed for a specific model and drivetrain configuration. Using an original part translates into:

• precise fitment to body and suspension mounts,
• proper integration with the braking and steering systems,
• preservation of factory suspension performance parameters.

The product has a dedicated OEM part number and associated interchangeable numbers, which facilitates compatibility verification with a specific version of the BMW E81 120d N47 177HP without the need for modifications or adaptations.

Characteristics of the used component

The shock absorber with steering knuckle is offered as a used part, which is a cost-effective solution while maintaining the manufacturer's original specifications. This type of component is particularly useful when:

• a quick replacement is necessary after mechanical damage,
• you want to maintain the factory handling characteristics,
• you are looking for a compromise between price and compatibility with factory equipment.

Choosing a complete shock absorber and steering knuckle assembly reduces the risk of suspension geometry issues after repair and facilitates workshop work, shortening installation time.

Technical support and part selection

To correctly select this element for your car, it is worth verifying the manufacturer's markings, reference numbers, and vehicle configuration (engine, body version, braking system). In case of doubt, it is helpful to compare the currently installed component with the offered item and consult a mechanic specializing in the BMW brand.

If you are planning a comprehensive repair or upgrade of the front suspension area in your BMW and need other elements from the same group, such as control arms, hubs, or strut mounts, check the available parts in the Other BMW category.

Additional knowledge and guide materials

For drivers interested in comparing the characteristics of suspension and braking systems in high-performance cars, an article describing the differences in the construction of sports models may be useful. In this context, it is worth reading the material: Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the impact of suspension and brakes on vehicle handling and the selection of appropriate spare parts.