Mercedes W221 Wheel Carrier Rear Left N/S Suspension Wheel Hub A2213502108

Mercedes W221 Wheel Carrier Rear Left N/S Suspension Wheel Hub is a chassis component designed for the rear left side of the suspension in S-Class W221 generation models. It is responsible for precise wheel guidance, proper load transfer from the control arms and shock absorber, and a stable connection between the wheel hub and other suspension components, which directly impacts vehicle safety and predictable handling. This solution is suitable for both post-accident repairs and standard replacement of worn components in the rear axle.

Specifications and technical data

• SKU: A2213502108-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2213502108
• Substitutable numbers: A2213502108, A 221 350 21 08
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension

The rear wheel carrier in the Mercedes S-Class W221 is a key link connecting the wheel hub to the multi-link suspension components. It is responsible for:

• maintaining the correct rear axle geometry (toe, camber),
• stable mounting of the wheel hub and wheel bearing relative to the control arms and shock absorber,
• transferring vertical and lateral loads during driving, braking, and cornering,
• cooperation with the braking system and safety systems (ABS, ESP – through correct positioning of sensors and the wheel disc).

The vehicle placement specified as rear – left side allows for precise matching of the part to the correct position on the vehicle, minimizing the risk of errors when selecting parts.

Design and construction advantages

The rear wheel carrier in the W221 has been designed as a rigid, precise base for the hub and control arm mounts, which is essential for ride comfort and stability at higher speeds. The design ensures:

• adequate rigidity in the suspension's planes of operation,
• the ability to correctly install cooperating components (control arms, shock absorber, hub, brake equipment),
• maintenance of factory geometry parameters after proper installation and wheel alignment.

For workshops and users, this means that a correctly selected wheel carrier allows for the restoration of factory vehicle handling after mechanical damage or operational wear of suspension components.

Condition, fitment, and service application

The offered wheel carrier belongs to the Suspension replacement kits category, making it a natural choice for comprehensive work on the rear axle – especially when other components cooperating with the wheel hub have also been damaged. The element is intended for installation in Mercedes vehicles from the W221 series, although it is always recommended to verify compatibility using the OEM number and the specific configuration of the car.

In workshop practice, the rear wheel carrier is replaced, among other reasons, due to:

• mechanical damage resulting from collisions or hitting an obstacle,
• excessive wear of mounting points, which prevents maintaining stable geometry,
• corrosion or deformation affecting driving safety.

Ride comfort and safety after replacement

A correctly selected and installed rear wheel carrier contributes to:

• stable vehicle handling in corners and during load changes,
• even tire wear due to maintaining correct wheel alignment angles,
• proper operation of driver assistance systems that require precise wheel positioning.

For the user, this means more predictable car behavior, better tire contact with the road surface, and reduced risk of improper tire wear after suspension repairs.

Technical support and additional information

To fully utilize the potential of a component such as a rear wheel carrier, it is worth knowing the basics of suspension diagnostics and service. Practical tips regarding shock absorbers, control arms, and stabilizers can be found in the article: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers, which helps in better planning service work within the chassis system.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Mercedes and need other elements from the same group, such as control arms, mounting hardware, or additional components cooperating with the hub, check the available parts in the Mercedes suspension replacement kits category.

When selecting used suspension components, a guide describing safe online shopping may also be helpful – more practical tips can be found in the material: Safe purchase of used car parts online – a step-by-step guide, which discusses, among other things, selection by OEM numbers and seller verification.