BMW E88 Cabrio 123d N47S Rear Left N/S Suspension Hub Leg Brake Caliper Disc

BMW E88 Cabrio 123d N47S Rear Left N/S Suspension Hub Leg Brake Caliper Disc is an original chassis component designed for the rear left side of the vehicle. Thanks to its factory geometry and precise fitment for the specific BMW model, it ensures stable handling, predictable vehicle behavior, and correct load distribution within the suspension system. This solution is particularly beneficial for post-collision repairs, suspension regeneration, or precise wheel alignment adjustments.

Specifications and technical data

• SKU: 6774807-25
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774807
• Substitutable numbers: 33326774807, 6774807, 34216768697, 6768697, 33217533449, 7533449, 33217561783, 7561783, 34216855236, 6855236, 33326757735, 6757735, BG
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension

The steering knuckle with control arm in the rear axle is responsible for wheel guidance, maintaining proper geometry, and transferring forces from the road surface to the chassis. In the BMW E82 123d model, this component works in conjunction with other multi-link suspension parts, influencing:

• driving stability at higher speeds,
• precision of steering response,
• even tire wear,
• damping comfort of road irregularities in the rear part of the vehicle.

The vehicle placement specified as rear – left side allows for unambiguous identification of the mounting position and reduces the risk of errors when selecting parts.

Original origin and assembly compatibility

The part comes from the BMW group, which ensures the preservation of factory design parameters and compatibility with standard mounting points. The original steering knuckle with control arm provides:

• proper fitment with the hub, shock absorber, and other control arms,
• compliance with factory wheel alignment and camber settings,
• easier geometry adjustment after installation.

The product is categorized under Suspension replacement kits, which facilitates selection during comprehensive rear axle maintenance – especially when multiple components are being replaced simultaneously.

Characteristics of the used component

The part is offered in used condition, which represents a reasonable compromise between repair costs and maintaining original manufacturing quality. A used steering knuckle with control arm is a good solution when:

• mechanical damage has occurred on the rear left side (e.g., hitting a curb, collision),
• there are issues with wheel alignment despite other components being in good working order,
• you want to maintain consistency with the factory BMW suspension system.

Before installation, it is recommended to perform a standard inspection of mounting surfaces, bolt sockets, and contact points with the bearing and shock absorber to ensure trouble-free operation after replacement.

Benefits of using the original steering knuckle with control arm

Using a dedicated rear suspension component on the left side translates into a number of practical operational benefits:

• Restoration of factory geometry – crucial after accident repairs or when replacing tires with new ones.
• Better handling predictability – especially noticeable during dynamic driving and on uneven surfaces.
• Reduction of irregular tire wear – thanks to stable rear axle wheel alignment.
• Consistency with other suspension components – no need for adaptations or modifications.

For workshops and individual users, this means shorter installation time, easier adjustment, and a predictable final result after suspension service.

Part selection and additional technical materials

To ensure you are choosing the correct component, it is worth verifying the manufacturer's markings, reference numbers, and compatibility with the specific engine version and model year of the BMW E82 123d. The product has assigned interchangeable numbers, which facilitates matching in service catalogs and parts selection systems.

If you are planning a comprehensive repair or upgrade of the suspension area in your BMW and need other elements from the same group, such as control arms, steering knuckles, or complete rear axle modules, check the available parts in the BMW suspension replacement kits category.

When deciding to use a pre-owned component in the chassis, a guide comparing different suspension solutions will be helpful – especially when making modifications or switching from a stock configuration to a more dynamic one. You can find more practical tips in the article Stock vs. sports suspension – design differences and is it worth buying used suspension parts?.