Mercedes W212 E 250 CDI Front Left N/S Suspension Leg Brake Disc Wheel Hub

The Mercedes W212 250 CDI Suspension Leg, Steering Knuckle, Hub, and Caliper Front Left is a complete, used set of front suspension components designed for the driver's side front axle. The set combines the suspension leg, steering knuckle, hub, and caliper in one configuration, simplifying servicing and allowing for a consistent, technically correct replacement of the entire assembly. This is a practical solution for users who value factory fitment, driving stability, and predictable vehicle behavior.

Specifications and technical data

• SKU: A2123204013-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2123204013
• Substitutable numbers: A2123204013, A 212 320 40 13, A2123320700, A 212 332 07 00, A2044212381, A 204 421 23 81, A2124211312, A 212 421 13 12, BG
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Purpose and Vehicle Placement

The presented set is designed for the front axle on the left side, which is crucial for suspension geometry and proper interaction with the steering and braking systems. Integrating the suspension leg, steering knuckle, hub, and caliper into a single unit reduces the risk of mismatch between individual components and facilitates the inspection of play and alignment during installation.

By maintaining the original system architecture, the set allows for the restoration of correct vehicle handling, braking stability, and consistent suspension performance under typical road conditions.

Set Construction and Benefits of Complete Replacement

The set includes key components responsible for handling vertical and lateral loads, as well as braking forces. In one configuration, you receive components responsible for:

• Wheel guidance in its axis – via the steering knuckle interacting with suspension and steering system elements,
• Wheel mounting – thanks to the hub providing stable rim attachment,
• Braking system operation – via the caliper interacting with the disc and pads,
• Shock absorption – realized by the suspension leg as a load-bearing element of the system.

A set configured in this way allows for a cohesive replacement of the entire section responsible for wheel guidance and braking, which is particularly important after significant mechanical damage or when there are visible differences in wear between the left and right side components.

Product Characteristics and Fitment for Mercedes W212 250 CDI

This component is intended for Mercedes E-Class W212 generation vehicles with the 250 CDI engine, ensuring structural compatibility with the factory suspension and braking system of this model. Using an original part from disassembly allows for the preservation of performance parameters intended by the vehicle manufacturer, including geometry, mounting points, and interaction with other front axle components.

The used nature of the part means it comes from an operated vehicle, which in practice allows for economical repairs while maintaining the original structural specifications. This is a sensible choice for drivers who want to maintain the technical consistency of their car while controlling service costs.

Why Choose an Original Suspension Set from Disassembly

For premium models like Mercedes, using original solutions directly impacts driving comfort, steering precision, and component durability. A set comprising the suspension leg, steering knuckle, hub, and caliper allows you to:

• minimize the risk of geometry problems after repair,
• maintain predictable vehicle behavior during braking and cornering,
• reduce the number of potential points of incompatibility between parts from different sources.

For many Mercedes-Benz owners, this is also a way to preserve the brand's characteristic blend of comfort and stability without having to opt for more expensive new components.

Support with Selection and Additional Information

It is always advisable to confirm the correct suspension set for a specific engine and body version based on the OEM number or vehicle data. In practice, this helps avoid compatibility issues and speeds up the installation process. If you want to check step-by-step how to correctly verify part compatibility using VIN and OEM numbers, consult the advice in the article how to choose the right car part by VIN and OEM number.

If you are interested in a broader context of using used, original components in cars of this brand – including suspension elements – it is worth reading the material used Mercedes parts from original disassembly, which discusses the practical aspects of such a solution in premium cars.

If you are planning a comprehensive repair or upgrade of the front suspension area in your Mercedes and need other parts from the same group, such as additional suspension legs, steering knuckles, or hubs with calipers, check the available parts in the category Mercedes Suspension Replacement Kits.