BMW E90 E92 330i N52 N52N Rear Left N/S Leg Brake Suspension Wheel Hub Axle

BMW E90 E92 330i N52 N52N Rear Left N/S Leg Brake Suspension Wheel Hub Axle is an original suspension component designed for the rear left side of BMW 3 Series E90/E92 models equipped with N52 and N52N engines. Thanks to its factory geometry and precise fit for the multi-link suspension design, it ensures stable handling, correct axle shaft alignment, and precise maintenance of suspension angles. This solution allows for a technically correct repair following mechanical damage or wear of load-bearing components.

Specifications and technical data

• SKU: 6774807-28
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774807
• Substitutable numbers: 33326774807, 6774807, 34216769101, 6769101, 33217527027, 7527027, 33207580945, 7580945, 34216855004, 6855004, 33326757735, 6757735, 34216764655, 6764655, BG
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The steering knuckle integrated with the axle shaft for the rear left side is responsible for stable wheel guidance, transferring loads from the body to the wheel hub, and maintaining proper suspension geometry. In the BMW E90/E92 design with N52/N52N engines, this component works in conjunction with control arms, the shock absorber, and the drivetrain, ensuring:

• control of wheel position relative to the body during acceleration and braking,
• proper torque transmission through the axle shaft,
• maintenance of specified camber and toe-in angles on the rear axle.

As a result, the vehicle maintains predictable road behavior, and the suspension system operates according to the manufacturer's specifications.

Benefits of using an original steering knuckle with axle shaft

Choosing an original BMW component from the Suspension Replacement Kits category allows you to maintain the vehicle's factory handling characteristics. Compared to aftermarket replacements of uncertain origin, the original steering knuckle with axle shaft offers:

• a secure fit to body mounts and suspension components,
• preservation of the stiffness and load distribution designed by the manufacturer,
• a lower risk of geometry alignment issues after installation.

This is particularly important in higher-power vehicles, such as the 330i, where the precision of the rear axle affects traction, stability at higher speeds, and ride comfort.

Vehicle placement and installation aspects

The presented steering knuckle with axle shaft is intended for the rear left side of the vehicle, which is crucial when selecting parts for a specific axle and side of the car. Proper matching of the installation side reduces the risk of repair errors and allows for efficient service work.

The item comes from a vehicle and is offered as a used part, which provides a reasonable compromise between repair costs and maintaining original structural quality. After installation, it is recommended to perform a rear axle geometry alignment to fully utilize the suspension's potential and avoid uneven tire wear.

Using original used parts in repairs

When repairing the suspension system, many users consider the choice between refurbishment and installing original used components. In the case of structural sub-assemblies, such as the steering knuckle with axle shaft, a factory-original part from dismantling often ensures better parameter repeatability than some repair solutions. If you would like to learn more about the arguments for this approach, it is worth reading an article discussing manual transmissions and original components: Manual transmission failures – why an original used part is sometimes a more reasonable choice than refurbishment.

Expansion and comprehensive replacement of BMW suspension components

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, bushings, or additional load-bearing components, check out the available parts in the BMW Suspension Replacement Kits category.