BMW 1 Series E87 118i N46 Front Left N/S Spring Strut Brake Suspension Leg Hub

BMW 1 Series E87 118i N46 Front Left N/S Spring Strut Brake Suspension Leg Hub is a complete suspension system component designed for the front axle on the driver's side, ideal for replacing worn suspension in the 1 Series E87. The assembly combines key components responsible for wheel guidance, directional stability, and steering precision, which helps restore the car's predictable and safe handling. Thanks to the use of the original BMW design, the part maintains factory geometry and suspension performance characteristics.

Specifications and technical data

• SKU: 6786017-10
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6786017
• Substitutable numbers: 31316786017, 34116774038, 34116854996, 34116774681, 31216765157, 31216793923, 6786017, 31316771553, 6771553
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The presented item belongs to the Suspension replacement kits group and is intended for installation on the front, left side of the vehicle. In one assembly, it combines the functions of wheel guidance, vertical load transfer, and maintaining proper suspension geometry, which has a direct impact on stability during braking, cornering, and ride comfort.

Combining the shock absorber with the steering knuckle allows for a consistent, technically correct replacement of components responsible for:

• damping vibrations and road surface irregularities,
• maintaining the correct position of the hub and wheel mounting relative to the body,
• preserving factory suspension angles on the front axle.

Benefits of using a complete assembly

Using a complete shock absorber-steering knuckle assembly on the front left of a BMW helps reduce the risk of installation errors and speeds up the service process. The mechanic receives an integrated component that, after proper installation and geometry adjustment, restores predictable vehicle handling and consistent front axle behavior relative to the right side.

The main advantages of this solution include:

• structural consistency with the factory running gear,
• easier inspection of mounting conditions and geometry reference points,
• possibility of efficient replacement within a single service operation.

Performance characteristics and condition of the part

The item comes from a BMW vehicle and is offered as a used part, which represents a reasonable compromise between repair costs and maintaining the original suspension design. This type of component is particularly attractive for post-accident repairs, geometry correction after mechanical damage, or comprehensive replacement of wear-and-tear items on the front axle.

Due to the nature of the product, installation in a specialized service center is recommended, with subsequent inspection and adjustment of wheel alignment and camber angles to fully utilize the potential of the suspension system and ensure even tire wear.

Technical selection and compatibility with reference numbers

The offered assembly has an assigned OEM part number and associated interchangeable numbers, which facilitates precise identification in BMW catalogs and parts selection systems. Before purchasing, it is worth comparing the markings with vehicle data or consulting a technical advisor to confirm full compatibility with the specific engine version and equipment level.

Information on reference numbers is particularly important when swapping components within the same model platform, where differences occur depending on the model year, engine type, or the braking system used.

Suspension upgrade expansion and technical knowledge

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 shock absorbers, springs, or steering knuckles, check out the available parts in the BMW suspension replacement kits category.

For informed component selection, it is worth learning about the differences between factory configurations and stiffer performance solutions – these are discussed in detail in the article Standard vs. sports suspension – design differences and is it worth buying used suspension parts?, where you will find practical tips, comparison tables, and answers to the most frequently asked questions regarding used suspension components.