BMW Z4 E85 2.5i M54 Rear Left N/S Suspension Leg Wheel Hub Brake Disc Caliper

BMW Z4 E85 2.5i M54 Rear Left N/S Suspension Leg Wheel Hub Brake Disc Caliper is a complete, used module designed for the rear axle on the driver's side. The component comes from the dismantling of an original BMW vehicle, ensuring factory fitment and consistency with the suspension and braking system design.

Specifications and technical data

• SKU: 6774775-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774775
• Substitutable numbers: 33326774775, 6774775, 34216758127, 6758127, 34216794306, 6794306, 33326770819, 6770819, 33326757909, 6757909, 34211165031, 1165031, 34216766225, 6766225, 34216752545, 6752545, 33211229495, 1229495
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The presented set is dedicated to the BMW Z4 E85 2.5i with the M54 engine and is mounted on the rear axle on the left side. It includes key components responsible for wheel guidance, load transfer, and interaction with the braking system. This solution facilitates maintenance, as you receive elements responsible for both suspension stability and braking efficiency in a single module.

The placement on the vehicle on the rear left side allows for precise reproduction of the factory geometry, which is important for maintaining the correct driving path, even tire wear, and predictable vehicle behavior in corners.

Set construction and benefits of installation

The set includes suspension components along with the wheel hub, brake disc, and caliper, which allows it to be treated as a coherent service module. This solution offers several practical benefits:

• easier installation – fewer separate parts to match during repair,
• maintenance of compliance with the original BMW design,
• consistent cooperation between the suspension and the braking system on the given side of the axle.

Thanks to this set, you can restore the proper operation of the rear left wheel in one step, reducing the risk of incorrect installation of individual components.

Original BMW origin and interchangeable numbers

The element comes from the BMW production line, which means maintaining the manufacturer's quality standards and full compatibility with the factory suspension and brake system in the Z4 E85 2.5i M54. Using an original module from dismantling is particularly beneficial in sports and recreational cars, where handling precision and predictable body behavior are paramount.

The set has an assigned OEM part number and associated interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration. Before purchasing, it is worth comparing the markings with the car's data or using the BMW catalog to confirm fitment for your specific Z4 unit.

Condition, application, and selection of used parts

The product is offered as a used suspension replacement set, which represents a reasonable compromise between repair costs and maintaining the original BMW specification. This type of solution is particularly attractive for comprehensive service work on the rear axle, when simultaneous intervention in the suspension and braking system on one side is necessary.

If you want to better understand how to effectively use dismantled components and how to ensure their durability in daily operation, the following guide will be helpful: how to extend the life of used car parts. You will find practical tips there regarding, among other things, suspension and running gear elements.

Repair expansion and related elements

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 control arms, mounts, or complete rear axle modules, check the available parts in the category BMW suspension replacement sets.

If you are considering broader use of dismantled components in premium class cars, it is also worth reading an article describing the advantages of using original used components in vehicles of this class: used parts for Mercedes – original parts from dismantling. Although it concerns a different brand, it well illustrates the approach to economical yet high-quality repair of premium segment cars.