BMW 1 Series E87N 116i Front Left N/S spring strut brake suspension leg hub axle

BMW 1 Series E87N 116i Front Left N/S spring strut brake suspension leg hub axle is a complete front suspension strut assembly designed for installation on the driver's side of the facelifted BMW 1 Series. This used component allows for an economical yet functional repair of the suspension system, maintaining the factory handling characteristics. It is a solution for drivers who expect reliable handling and stability without the need to invest in new parts.

Specifications and technical data

• SKU: 6786017-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 31316786017
• Substitutable numbers: shock absorber, leg, 31316771553, 6771553, 31316786017, 6786017
• Location on the vehicle: Front, Left
• Category: Other Steering & Suspension Parts

Purpose and function in the suspension

The presented strut with steering knuckle operates in the front suspension on the left side, responsible for damping vibrations and ensuring stable wheel guidance. Integrating the shock absorber with the steering knuckle makes it easier to maintain the correct front axle geometry, which translates into precise handling of the BMW 1 Series and predictable vehicle behavior during braking and cornering.

Thanks to the factory design, the element retains the proper stiffness and operating characteristics, which is particularly important in cars with a more dynamic suspension setup. It is a good choice both for typical repairs after mechanical damage and for replacing worn suspension components.

Benefits of using an original BMW component

The original design ensures proper fitment to the body mounts and wheel hub, which reduces the risk of installation problems and incorrect geometry. The used OEM component allows for maintaining factory suspension performance parameters without the need to experiment with aftermarket replacements of different characteristics.

The main advantages of this solution include:

• maintaining the stock damping and handling characteristics,
• compatibility with factory suspension system components,
• reduction of repair costs while maintaining OEM quality,
• reduced risk of alignment issues after installation.

Vehicle placement and installation aspects

The element is designed for installation on the front, left side of the vehicle, which is crucial when selecting parts for the front axle. Proper placement affects correct interaction with other suspension components, such as control arms, stabilizer links, or the wheel hub.

After installation, it is recommended to perform a wheel alignment to fully utilize the potential of the part and ensure even tire wear. Thanks to the design compliant with factory BMW standards, the installation process is predictable for workshops specializing in this brand.

Application in service, repairs, and modifications

This type of strut with steering knuckle will work well both for standard repairs after mechanical damage (e.g., after a collision or hitting an obstacle) and for refreshing the suspension system in higher-mileage vehicles. The used component allows for rational reduction of service costs while maintaining proper suspension functionality.

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 struts, steering knuckles, or mounting brackets, check the available parts in the Other BMW category.

Substantive support and project development

For those interested in comparing the characteristics of suspension and running gear in high-performance cars, it is worth reading the material discussing the differences in the construction of sports versions compared to stock models – you will find them in the article Audi RS vs other models – what is hidden under the hood and chassis?. This will allow you to better understand how much influence the selection of appropriate suspension components has on vehicle handling.

If you are considering improving driving characteristics using aftermarket parts and want to do it in a safe and cost-effective way, the guide Tuning with used parts – how to gain performance without spending a fortune, which discusses a practical approach to modifications using proven, used components, may be helpful.