Mercedes W164 320 CDI Wheel Carrier Hub Rear Right O/S Axle Brake Disc Caliper

The Right Rear Knuckle Hub for Mercedes W164 320 CDI is a complete rear suspension component with brake disc and caliper mounting, designed for the passenger-side drive axle. This solution, from the Suspension Replacement Kits category, restores proper geometry, stability, and steering precision in M-Class W164 SUVs. Its factory design ensures seamless integration with the original drivetrain and braking systems.

Specifications and technical data

• SKU: A1643501408
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1643501408
• Substitutable numbers: A1643501408, A 164 350 14 08, A 164 350 08 08, A1643500808
• Location on the vehicle: Rear, Right
• Category: Suspension Component Replacement Kits

Vehicle Application and Placement

This knuckle hub is intended for the right rear side of the vehicle, on the drive axle. It is responsible for wheel guidance, transferring suspension loads to the chassis, and interacting with the braking system (disc and caliper). Correct placement on the vehicle is crucial for:

• maintaining correct rear axle geometry,
• stability during acceleration and braking,
• even tire wear,
• precise cornering.

By being designed for a specific side of the vehicle, the risk of incorrect installation and subsequent suspension malfunctions is minimized.

Kit Construction and Suspension System Function

The Right Rear Knuckle Hub for Mercedes W164 320 CDI acts as a load-bearing element to which suspension components, the wheel hub, and braking system parts are attached. Integrated mounting points allow for proper installation of control arms, the shock absorber, and the brake caliper, resulting in:

• stable wheel guidance throughout the suspension's range of motion,
• secure mounting of the brake disc and caliper,
• appropriate transfer of longitudinal and lateral forces to the chassis.

This solution is particularly important in heavier SUV vehicles, where suspension components are subjected to greater loads and require a robust, well-designed structure.

Benefits of Using an Original Suspension Kit

Choosing a component from the Suspension Replacement Kits category, specifically designed for a particular Mercedes model, preserves the factory driving characteristics. Key advantages include:

• Compatibility with the Factory System – maintains the manufacturer-specified mounting points and suspension kinematics.
• Seamless Brake Integration – correct positioning of the disc and caliper reduces the risk of runout, uneven braking, or accelerated pad wear.
• Hassle-Free Installation – the design intended for a specific axle and vehicle side simplifies the mechanic's work and reduces service time.

For the user, this translates to more predictable vehicle behavior, better control, and a lower risk of additional repairs due to incorrect part selection.

Component Condition and Service Application

The offered knuckle hub is from a Mercedes vehicle and is intended for service applications as a replacement part for the rear suspension. It is a practical solution in situations where:

• the knuckle has suffered mechanical damage (e.g., after a collision or impact with an obstacle),
• mounting points show excessive wear,
• there are issues maintaining rear axle geometry.

Using the original design allows for the restoration of correct driving parameters without the need to modify other system components.

Technical Support and Additional Materials

If you are planning a comprehensive rear suspension overhaul for your SUV, consider selecting other components from the Mercedes Suspension Replacement Kits category. Browse the Mercedes Suspension Replacement Kits available in our store to find compatible components for your model.

Before installing the knuckle hub, it is recommended to familiarize yourself with suspension servicing principles and inspect related components. The guide article Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers, which discusses key aspects of diagnosing and replacing suspension components in popular models, will be helpful.

For owners of Mercedes vehicles interested in a broader context of parts selection, materials on the operation and servicing of other systems, such as the Guide to Engine Accessories in Mercedes C-Class and E-Class Models, may also be useful, helping to plan vehicle maintenance consciously.