Mercedes W166 Wheel Carrier Rear Left N/S Suspension Wheel Hub Brake Disc

Mercedes W166 Wheel Carrier Rear Left N/S Suspension Wheel Hub Brake Disc is a complete, used chassis component designed for installation on the rear axle on the driver's side. The set provides a practical service solution, allowing for the consistent replacement of key components responsible for wheel guidance, load bearing, and interaction with the braking system, while maintaining factory suspension geometry. As a result, rear axle repair can be performed efficiently while maintaining high precision in suspension operation.

Specifications and technical data

• SKU: A1663500108-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1663500108
• Substitutable numbers: A1663500108, A 166 350 01 08, A1663501110, A 166 350 11 10, A1664230581, A 166 423 05 81, A1664230600, A 166 423 06 00
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and vehicle placement

The presented element is designed for installation on the rear left side of the vehicle, in the suspension zone of the drive or non-drive axle (depending on the drivetrain version of the specific unit). Integrating the wheel carrier with the wheel hub and brake disc facilitates maintaining the correct wheel position relative to the body and ensures stable mounting of brake components.

A set configured in this way is particularly useful for post-collision repairs, replacing worn or corroded components, and for work related to restoring correct suspension geometry in models from the Mercedes W166 family.

Set construction and function in the suspension system

The rear wheel carrier in this model acts as a support for the wheel hub, brake disc, and mounting points for control arms and adjustment elements. Using a complete assembly allows for:

• maintaining the alignment of the hub relative to the wheel carrier and the body,
• stable transfer of vertical and lateral loads from the wheel to the suspension,
• proper interaction with the brake caliper and disc,
• preservation of factory mounting points for wheel alignment and camber adjustment elements.

Thanks to this, the suspension replacement set in this configuration reduces the risk of incorrect installation of individual parts and facilitates workshop work, especially during major rear axle repairs.

Benefits of using an original Mercedes component

Original Mercedes components are designed to maintain proper stiffness, durability, and compatibility with factory safety systems. Using such an element in the suspension translates into:

• consistent vehicle behavior during braking and cornering,
• reduction of vibrations and unwanted play within the rear axle,
• easier geometry adjustment after installation,
• better interaction with traction and stability control systems.

A used, original set allows for maintaining the handling characteristics typical of Mercedes W166 models, while simultaneously optimizing repair costs compared to purchasing new sub-assemblies.

Service application and installation

The complete rear left wheel carrier assembly with hub and brake disc will prove useful in situations where it is necessary to replace several elements simultaneously – for example, after mechanical damage, excessive wear, or corrosion. A set of this type:

• simplifies the disassembly and assembly process compared to replacing individual components,
• reduces the time required for diagnosing individual elements,
• facilitates restoring the correct wheel alignment relative to the body.

For workshops, this means more predictable working time, and for the user – greater confidence that the rear left side of the suspension will function in a manner similar to factory standards after the repair is completed.

Selection and compatibility with part numbers

The element has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection for a specific body version and equipment level. Before purchasing, it is worth comparing the markings with the vehicle documentation or the removed element to ensure full compatibility with the given suspension configuration.

In case of doubt, it is also useful to verify the placement on the vehicle – in this case, it is the rear, left side, which clearly defines the position of the set in the chassis system.

How to care for used suspension elements

To maximize the potential of used components, it is worth ensuring their proper installation, checking for play, and regularly inspecting the condition of bearings and surfaces interacting with the brakes. Additional tips regarding operation and maintenance can be found in the guide How to extend the life of used car parts?, where practical methods of caring for suspension and other dismantled sub-assemblies are described.

If you are planning a comprehensive repair or upgrade of the rear axle suspension zone in your Mercedes and need other elements from the same group, such as wheel carriers, hubs, or complete suspension modules, check the available parts in the category Mercedes suspension replacement sets.