BMW 5 Series E60 520i Rear Right O/S Suspension Hub Leg Brake Caliper Disc

BMW 5 Series E60 520i Rear Right O/S Suspension Hub Leg Brake Caliper Disc is an original chassis component designed for the rear right side of the vehicle. This precision-engineered steering knuckle serves as a key mounting point for suspension and braking system components, ensuring stable handling and predictable vehicle behavior. By maintaining factory geometry, it is a particularly beneficial solution for post-accident repairs and restoring original handling parameters.

Specifications and technical data

• SKU: 6770906-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6770906
• Substitutable numbers: 33326770906, 6770906, 33326754560, 6754560, 33326754558, 6754558, 33326770832, 6770832, 34216758058, 6758058, 34216766074, 6766074, 34216864061, 6864061, 34216753215, 6753215, 34216772085, 6772085, 33217527321, 7527321, 33207521130, 7521130
• Location on the vehicle: Rear, Right
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension

The rear right steering knuckle in the BMW 5 Series E60 model with the M54 engine is responsible for the stable connection of the wheel hub, control arms, and braking system components. A correctly selected component in this area has a direct impact on:

• maintaining proper rear axle wheel geometry,
• even load distribution during driving and braking,
• driving stability at higher speeds,
• proper cooperation with other multi-link suspension components.

Thanks to the use of a factory solution, compatibility with the original body structure and factory mounting points is maintained.

Benefits of using an original steering knuckle

Using a steering knuckle from BMW helps reduce the risk of fitment issues and incorrect geometry. The original design ensures:

• consistency with factory toe and camber settings,
• correct positioning of the hub and brake disc relative to the caliper,
• appropriate suspension node stiffness while maintaining ride comfort.

This is particularly important during repairs after mechanical damage, where even minor deviations in geometry can result in accelerated tire wear or unstable handling. Choosing an original suspension component minimizes these risks.

Vehicle placement and fitment

The presented steering knuckle is intended for installation on the rear, right side of the vehicle. Proper placement on the vehicle is important for both correct installation and subsequent geometry adjustment. Proper fitment to the specific BMW E60 520i M54 model version facilitates service work and reduces repair time.

The component should be installed using appropriate tools and in accordance with the manufacturer's procedures, which allows for maintaining proper tightening torques and operational safety. After replacement, inspection and potential adjustment of the rear axle wheel settings are recommended.

Characteristics of the used part

The steering knuckle comes from the Suspension replacement kits category and is a used element, which allows for economical repair while maintaining the original design. This type of part is particularly attractive in situations where it is necessary to replace several suspension components at once, and the priority is to maintain the factory design of the chassis.

Thanks to the preservation of the manufacturer's markings, it is possible to verify compatibility with the part number and interchangeable numbers based on service documentation or BMW catalogs, which facilitates professional selection of the component for a specific vehicle configuration.

Support in selection and operation

To maximize the potential of used suspension elements and ensure their longer, trouble-free operation, it is worth familiarizing yourself with practical tips regarding maintenance and installation. Detailed advice can be found in the article How to extend the life of used car parts?, which describes, among other things, good practices regarding dismantled suspension parts.

If you want to further deepen your knowledge on the professional selection of components from the secondary market and avoid mistakes when matching to a specific BMW version, the guide No more bad purchases! How to professionally select used car parts, which discusses the importance of OEM markings and reference number compliance, will also be helpful.

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