BMW F33 435dX Suspension Leg Front Left N/S xDrive Wheel Hub Brake Disc

Front left suspension assembly with hub, brake disc, and steering knuckle for BMW F33 435d xDrive is a complete service solution for the front axle, designed for installation on the driver's side. The part comes from disassembly, allowing for an economical repair while maintaining operational characteristics consistent with factory BMW suspension.

Specifications and technical data

• SKU: 6873771-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6873771
• Substitutable numbers: 6873771, 31316873771, 6868667, 31316868667, 6859003, 31216859003, 6850931, 34116850931, 6797602, 34106797602
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Vehicle Application and Function

The offered suspension replacement kit is dedicated to the front axle, left side, for the BMW 4 Series F33 435d xDrive model. The assembly includes key components responsible for wheel guidance, load transfer, and cooperation with the braking system and xDrive drivetrain.

The vehicle placement is precisely defined as front – left side, which facilitates part selection when planning repairs or post-collision replacements. This ensures the mechanic has confidence in the correct fit with the suspension structure and body geometry.

Assembly Structure and Key Components

The kit contains the elements necessary to restore the correct operation of the front left suspension corner in the xDrive system. In one assembly, you receive, among other things:

• Suspension strut – responsible for damping vibrations and maintaining the correct height of the front of the vehicle.
• Steering knuckle with wheel hub – ensuring stable wheel mounting, cooperation with the bearing, and steering system components.
• Brake discs – prepared for cooperation with the factory BMW braking system, contributing to predictable braking performance.

A kit configured in this way allows for a cohesive replacement of the entire suspension corner, which is particularly useful for accident repairs or when several components are significantly worn simultaneously.

Benefits of Using an Original BMW Assembly

As an original BMW component from the suspension replacement kits category, the product retains the factory geometry, mounting points, and operational characteristics intended by the manufacturer. This translates to:

• stable vehicle handling at higher speeds and during dynamic maneuvers,
• proper cooperation with the xDrive drivetrain, including traction and stability control systems,
• maintaining predictable car behavior during braking, even with uneven axle load.

A used, original suspension assembly is often chosen as a sensible alternative to new parts, allowing for cost reduction while maintaining compliance with original design specifications.

Professional Installation and Service Application

Due to the complexity of the front suspension design in BMW vehicles with xDrive, installation in a specialized workshop is recommended. Correct fitting of the strut, steering knuckle, hub, and brake disc is crucial for:

• accurate wheel alignment,
• even tire wear,
• safe operation of the braking system.

After installation, a full wheel alignment check and verification of the xDrive system's operation under road conditions are recommended.

Alternatives and Further Information

If you are looking for other BMW suspension replacement kits for similar models or drivetrain configurations, check out our dedicated category: BMW suspension replacement kits. You will find a wide selection of complete solutions for various series and engine versions.

Owners of premium cars may also be interested in the topic of economical repairs using original disassembled components – more practical information can be found in the article: used Mercedes parts – original parts from disassembly, which shows how to wisely use the used parts market in the premium segment.