BMW 1 Series E87 LCI 120d Front Left N/S Spring Strut Brake Suspension Leg Hub

BMW 1 Series E87 LCI 120d Front Left N/S Spring Strut Brake Suspension Leg Hub is an original suspension component from the Steering Knuckles category, designed for installation on the front left side of the vehicle. This OEM solution ensures proper suspension geometry, stable handling, and correct compatibility with other front axle components in the facelifted BMW 1 Series.

Specifications and technical data

• SKU: 6786017-7
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6786017
• Substitutable numbers: 31216793923, 6793923, 31216764443, 6764443, 31216765157, 6765157, 31316786017, 6786017, 31316771553, 6771553, 34116776527, 6776527, 34116772017, 6772017, 34116854998, 6854998, 3411676464334116772669, 6764643, 6772669, 34116769095
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The presented steering knuckle integrated with the shock absorber has been designed specifically for BMW E87 LCI models with the N47 engine in the 120d version, for placement on the front, left side. It is responsible for precise wheel guidance, maintaining the specified geometry (camber and toe angles), and stable load transfer from the road to the chassis.

Thanks to its factory OEM design, this component works with factory mounts, the hub, the braking system, and other suspension components, which facilitates installation and reduces the risk of fitment issues.

Benefits of using an original BMW steering knuckle

Using an original steering knuckle with a shock absorber in a BMW E87 LCI N47 120d allows you to maintain the handling characteristics intended by the manufacturer. In practice, this means:

• stable vehicle behavior during braking and acceleration,
• confident handling in corners,
• proper cooperation with the steering and braking systems,
• easier geometry adjustment after installation.

The component from the Steering Knuckles category is crucial for driving safety – its proper selection and installation affect braking efficiency, even tire wear, and driving comfort.

Condition, origin, and fitment

The offered component is an original BMW part in used condition, which allows you to combine a favorable purchase cost with the preservation of factory specifications. The steering knuckle with the shock absorber is intended for installation on the front, left side, in accordance with the vehicle placement marking. Before installation, standard workshop verification is recommended, as well as checking and setting the suspension geometry after assembly.

To facilitate identification, a dedicated OEM part number and related interchangeable numbers have been used, which allows for precise matching of the element to the specific configuration of the facelifted BMW 1 Series.

Application in service practice

The front left steering knuckle with shock absorber is particularly important during post-accident repairs, replacement after mechanical damage (e.g., hitting a curb, potholes), or during comprehensive suspension renovation. Replacing it with an original OEM element helps restore:

• factory mounting points and structural rigidity,
• correct positioning of the hub and brake disc relative to the caliper,
• compliance with factory parameters of the BMW suspension system.

As a result, the car regains predictable behavior on the road, and further diagnostics of the suspension and steering system are simpler and more reliable.

BMW Steering Knuckles – expansion and completion of the front axle

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 additional steering knuckles, brackets, or related mounting hardware, check the available parts in the BMW Steering Knuckles category.

New or used – how to choose the right part?

When choosing between a new and a used steering knuckle with a shock absorber, it is worth considering both costs and the quality and origin of the element. Original used components often offer a favorable compromise between price and maintaining factory parameters, especially in the case of specialized suspension parts for specific engine and body versions.

If you want to better understand the differences between new and used OEM parts, compare cost-effectiveness and fitment for your car, the following article will be helpful: New or used? A comparison of costs and quality of car parts.