BMW 3 E46 Saloon 323i M52 Rear Right O/S Suspension Leg Brake Wheel Hub Axle

BMW 3 E46 Saloon 323i M52 Rear Right O/S Suspension Leg Brake Wheel Hub Axle is a complete assembly designed for the 3 Series sedan with the M52 engine. It includes the rear right suspension leg along with the brake and hub assembly, facilitating quick and precise replacement in the rear suspension area. By maintaining the factory geometry of the system, it ensures consistent handling and predictable vehicle behavior.

Specifications and technical data

• SKU: 6774778-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774778
• Substitutable numbers: 33326774778, 6774778, 34216758136, 6758136, 33211229496, 1229496, 33211229592, 1229592, 33321136644, 1136644, 33321094458, 1094458, 33326770804, 6770804, 34211165034, 1165034, 34216864903, 6864903, 34216855155, 6855155, 34211165211, 1165211, 34211162315, 1162315
• Location on the vehicle: Rear, Right
• Category: Suspension Component Replacement Kits

Purpose and compatibility

The presented assembly is dedicated to the BMW 3 E46 Saloon 323i with the M52 engine, for the rear right side. Integrating the suspension components, wheel hub, and brake system parts allows for maintaining the correct position of the wheel relative to the body and the vehicle's axle, which is crucial for stability during acceleration, braking, and cornering.

Suspension assembly construction and vehicle function

The rear right suspension assembly in this model is responsible for transferring loads from the wheel to the body, maintaining axle geometry, and working in conjunction with the braking system. Using a complete module with the hub and axle reduces the risk of assembly errors and facilitates the inspection of play and wheel runout. The factory BMW design ensures proper mounting points, adequate stiffness, and compatibility with standard chassis components.

Application in the braking and chassis system

The assembly includes the part responsible for mounting the brake disc and working with the caliper, which translates into stable and repeatable brake performance on the rear axle. A correctly selected suspension assembly with the hub minimizes vibrations during braking, reduces uneven tire wear, and supports an even distribution of braking forces between the left and right sides. This is particularly important in higher-power cars, such as the 323i, where the chassis operates under greater load.

Benefits of using an original used assembly

Choosing an original BMW component from the Suspension replacement kits category allows you to maintain factory suspension and brake performance parameters without the need to fit replacements of uncertain specifications. A used, complete suspension module with the hub and axle is often a more predictable solution than assembling a system from many different parts, as it comes from a single vehicle and maintains structural consistency.

Professional installation and diagnostics

Before installation, it is recommended to perform a thorough inspection of the component on a lift and verify the condition of mating parts – bushings, shock absorber, spring, and brake hardware. A correctly installed suspension assembly on the rear right side restores proper vehicle handling, eliminates knocking resulting from excessive play, and helps in achieving correct toe and camber values during geometry alignment.

Related components and further system upgrades

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

Technical knowledge and selection of used components

When planning major service work, it is also worth considering other key drivetrain and chassis components. To better understand when it is worth opting for original used components instead of costly refurbishment, read the article: Manual transmission failures in cars – why is an original used part a more sensible choice than regeneration?. This will allow you to take an informed approach to selecting parts in the area of suspension and drivetrain as well.