BMW Z4 E85 2.5i M54 Roadster Rear Left N/S Suspension Leg Brake Axle Disc

BMW Z4 E85 2.5i M54 Roadster Rear Left N/S Suspension Leg Brake Axle Disc is a complete rear axle component, including the suspension strut, hub mount, braking components, and a section of the axle. This solution is designed for users who want to precisely and consistently restore the rear suspension geometry after a collision, corrosion, or intensive use. By using original BMW components, you receive factory-fit compatibility with the body structure and chassis.

Specifications and technical data

• SKU: 6774775-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774775
• Substitutable numbers: 33326774775, 6774775, 34216758127, 6758127, 33211229707, 1229707, 34216794306, 6794306, 33326770819, 6770819, 33326757909, 6757909, 34211165031, 1165031, 34216766225, 6766225, 34216752545, 6752545, 33211229497, 1229497
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and compatibility

The offered assembly is dedicated to the BMW Z4 E85 2.5i model with the M54 engine in the Roadster version and is mounted on the rear left side of the vehicle. Integrating the suspension and braking system elements into a single module facilitates maintaining proper axle geometry, which translates into handling stability, correct tire wear, and predictable vehicle behavior in corners.

Suspension and brake set construction

The presented item belongs to the Suspension replacement kits group, meaning it includes key components responsible for transferring loads from the body to the wheel and for working with the braking system. Using the complete rear left module reduces the risk of incorrect installation of individual parts and simplifies service work.

Combining the suspension strut with the axle and brake disc allows for the preservation of factory mounting points, which is crucial for post-accident repairs, replacing corroded elements, or restoring the car to a technical condition consistent with the manufacturer's specifications.

Benefits of using an original BMW assembly

Choosing an original BMW rear suspension assembly ensures:

• Structural consistency – all elements operate within the parameters intended for the BMW Z4 E85 2.5i M54 Roadster.
• Proper cooperation with the stock braking system and vehicle safety systems.
• Reduced repair time due to the installation of a complete module instead of many individual parts.
• Easier technical condition control of the rear axle after installation, including alignment and camber settings.

The item comes from dismantling, which allows for economical repair while maintaining original BMW specifications. This solution is particularly beneficial for repairing daily-driven vehicles, where a reasonable balance between cost and quality is essential.

Professional installation and operation

Due to the importance of the rear suspension for driving safety, installation in a specialized workshop using appropriate tools and manufacturer procedures is recommended. After installation, it is worth performing:

• a rear axle geometry check,
• verification of the braking system performance on a diagnostic stand,
• an inspection of other suspension elements on the opposite side of the vehicle.

To maximize the potential of the used assembly, it is worth reading the guide on operating dismantled parts – practical tips can be found in the article How to extend the life of used car parts?.

Expanding repairs within the BMW rear axle area

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