BMW F12 Suspension Leg Axle Brake Wheel Carrier Rear Left N/S 640d Diesel N57Z

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F12 Suspension Leg Axle Brake Wheel Carrier Rear Left N/S 640d Diesel N57Z is an original part from the Suspension repair kits group, designed for installation on the rear left side of the vehicle. This is a complete structural solution for the rear axle, which allows for the restoration of proper geometry, handling stability, and correct operation of the braking system in BMW cars with a diesel engine.

Specifications and technical data

• SKU: 6852893-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7566075
• Substitutable numbers: 33207566075, 7566075, 6852893, 33306852893, 6898729, 34116898729, 7846693, 34217846693
• Location on the vehicle: Rear, Left
• Fuel type: Diesel
• Category: Suspension Component Replacement Kits

Purpose and function in the chassis system

The presented element is a key mounting point for the wheel, suspension, and brake components on the rear left axle of the BMW 6 Series F12 with a diesel engine. The steering knuckle, along with the wheel carrier, is responsible for:

• maintaining the correct position of the hub and wheel relative to the body,
• stable connection with control arms and other suspension components,
• precise wheel guidance during driving, braking, and overcoming road irregularities.

Thanks to factory geometry and adaptation to the specific diesel engine version, this element allows for maintaining the handling characteristics typical of BMW and predictable vehicle behavior in corners.

Compatibility with BMW F12 640d Diesel

The steering knuckle has been designed for the rear axle construction in the BMW F12 640d model with the N57 diesel unit. This means compatibility with:

• the mounting point to the body and suspension arms on the rear left side,
• the layout of the braking system components,
• load parameters typical for the Diesel version.

Such fitment reduces the need for installation modifications and facilitates service, while also allowing for the maintenance of factory wheel geometry settings after proper adjustment.

Characteristics of the used part

The offered component is in Used condition, which means it comes from vehicle dismantling and has been previously operated. For many BMW users, this is a technically and economically sound choice because:

• it retains the original design and fitment typical of OE parts,
• it allows for reducing the costs of rear axle repairs while maintaining correct performance parameters,
• it is a good solution for accident repairs or replacing elements after mechanical wear.

Before installation, it is recommended to perform a standard inspection of the condition of mounting surfaces, bolt sockets, and cooperating suspension and brake components to ensure trouble-free operation after replacement.

Benefits of using an original suspension kit

Using an original wheel carrier and steering knuckle in the BMW F12 640d Diesel translates into a number of practical benefits:

• Factory fitment – maintaining the correct mounting points, control arm operating angles, and the correct position of the brake caliper.
• Consistency with the braking system – compatibility with factory discs, calipers, and brake equipment intended for the rear left side.
• Handling stability – a properly selected suspension element affects traction, ride comfort, and even tire wear.
• Trouble-free installation – construction consistent with BMW solutions reduces workshop labor time and the risk of fitment issues.

Installation recommendations and additional resources

When replacing the steering knuckle and wheel carrier on the rear left axle, it is worth performing a suspension geometry adjustment after installation is complete to fully utilize the potential of the BMW chassis. In case of doubts regarding the selection of parts for a specific diesel engine version, it may be helpful to compare the element with the one currently installed and verify it using part numbers in the service documentation.

If you are planning a comprehensive repair or upgrade of the rear suspension zone in your BMW and need other elements from the same group, such as control arms, bushings, or additional mounts, check the available parts in the BMW suspension repair kits category.

To compare the approach to purchasing original dismantled components in the premium segment, you can read the article on our blog: Used parts for Mercedes – original components from dismantling, which discusses the advantages of choosing proven, used elements in high-class cars.

If you are interested in a broader context of selecting parts for modern BMW units and want to better understand the importance of correct component compatibility, the following guide may be helpful: checklist before purchasing key system elements for a BMW with a B58 engine, in which we discuss practical aspects of verifying parts before installation.