Mercedes S W220 S 320 CDI Front Right O/S Suspension Brake Disc Wheel Carrier

Mercedes S W220 S 320 CDI Front Right O/S Suspension Brake Disc Wheel Carrier is an original suspension component from the Suspension replacement kits group, designed for installation on the right side of the front axle. It is a solid, used part that allows for the restoration of correct wheel geometry, handling stability, and predictable vehicle behavior during daily operation.

Specifications and technical data

• SKU: A2203303820
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2203303820
• Substitutable numbers: A2203303820, A 220 330 38 20, A2203300725, A 220 330 07 25, A0024202483, A 002 420 24 83, A2204212512, A 220 421 25 12
• Location on the vehicle: Front, Right
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension

The steering knuckle with wheel hub for the front right side is responsible for precise wheel guidance, transferring loads from the suspension to the body, and working in conjunction with the braking and steering systems. In the Mercedes W220 320 CDI model, it is a key link ensuring:

• maintenance of proper wheel geometry (toe, camber angle),
• stable vehicle handling at higher speeds,
• correct cooperation with shock absorbers and control arms,
• even tire wear and predictable steering response.

By using an original steering knuckle with hub, the factory handling characteristics are preserved, which is important for both comfort and driving safety.

Construction and fitment to the front axle

The component is designed specifically for the front right side of the vehicle, which guarantees the correct placement of mounting points for control arms, the shock absorber, the hub, and steering system components. Such a design:

• facilitates installation in place of the factory part without modifications,
• ensures compatibility with the stock W220 320 CDI suspension,
• allows for maintaining appropriate rigidity and durability in the wheel mounting zone.

Precise fitment to the specific model reduces the risk of play, incorrect wheel alignment, or accelerated wear of cooperating components.

Benefits of using a genuine used part

Choosing a used steering knuckle with hub for the Mercedes W220 320 CDI is a solution that allows you to combine cost control with maintaining the factory parameters of the suspension system. The original construction ensures:

• compliance with factory dimensional tolerances,
• correct cooperation with stock suspension and brake components,
• stable vehicle behavior after geometry adjustment.

When replacing this type of component, it is recommended to perform a professional wheel alignment after installation to fully utilize the part's potential and avoid uneven tire wear.

Selection of suspension components and technical support

The steering knuckle with hub belongs to the Suspension replacement kits group, which is why during repairs, it is often worth considering the simultaneous replacement of other components, such as control arms, stabilizer links, or shock absorbers. To better plan the scope of work and make an informed decision on which elements are worth buying as used, our blog guide will be helpful: Stock vs. sports suspension – construction differences and is it worth buying used suspension parts?.

Mercedes suspension replacement kits – expansion and modernization

If you are planning a comprehensive repair or modernization of the suspension area in your Mercedes and need other elements from the same group, such as control arms, shock absorbers, or strut mounts, check the available parts in the Mercedes suspension replacement kits category.

Additionally, when deciding between refurbishment and purchasing a used suspension element, it is worth reading the practical tips described in the article: Refurbished or used original – which part to choose for repairs?. This will make it easier for you to assess when a used steering knuckle with hub will be the optimal choice in terms of technical and economic aspects.