Mercedes W210 E 240 Front Left N/S Suspension Brake Disc Wheel Carrier

Mercedes W210 E 240 Front Left N/S Suspension Brake Disc Wheel Carrier is a factory-made chassis component designed for the front axle on the driver's side. This original steering knuckle ensures proper wheel guidance, driving stability, and correct interaction with braking and suspension components. Thanks to its precise fit for the specific Mercedes W210 E 240 generation, it provides a practical solution for repairs following a collision or due to operational wear.

Specifications and technical data

• SKU: A2103300020
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2103300020
• Substitutable numbers: A2103300020, A 210 330 00 20, A2104210712, A 210 421 07 12
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Purpose and vehicle placement

The steering knuckle is designed for installation in the front suspension area on the left side. It is responsible for the rigid connection between the wheel hub and suspension components, as well as maintaining the correct steering geometry. Its placement on the front axle means the component works directly with the shock absorber, control arms, tie rod ends, and the brake assembly.

Technical and functional characteristics

The steering knuckle in this Mercedes model serves as a key wheel mounting point, transferring loads from the road surface to the suspension and body. The manufacturer's design ensures:

• stable wheel guidance throughout the full range of suspension travel,
• maintenance of specified geometry (toe, camber, and caster angles),
• correct positioning of the brake disc relative to the caliper,
• compatibility with factory mounting points on the vehicle body.

By using an original component, you gain consistency with the factory suspension design, which translates into predictable vehicle behavior during braking, acceleration, and cornering.

Component condition and use in repairs

The offered steering knuckle comes from the used Mercedes parts segment, which allows for economical repair while maintaining the manufacturer's original specifications. This solution is particularly beneficial for:

• repairs following mechanical suspension damage,
• restoring correct geometry after hitting a curb or pothole,
• comprehensive replacement of front suspension components on the driver's side.

Choosing an original steering knuckle from dismantling helps reduce the risk of fitment issues typical of aftermarket replacements with inconsistent manufacturing quality.

Part selection by numbers and compatibility

The steering knuckle has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection for specific engine and equipment versions. Before purchasing, it is recommended to compare the markings with the component currently installed in the vehicle or with the manufacturer's specifications to ensure full compatibility with the suspension and braking system.

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

Safety, driving comfort, and technical knowledge

A properly selected and functional steering knuckle has a direct impact on driving safety, braking efficiency, and even tire wear. In the case of more serious drivetrain repairs or when considering the purchase of used components, it is worth expanding your knowledge about other key parts. Useful information can be found in the article Manual transmission failures in cars – why is an original used part a more reasonable choice than remanufacturing?, which demonstrates when choosing original used components is technically justified and cost-effective.

Summary

Mercedes W210 E 240 Front Left N/S Suspension Brake Disc Wheel Carrier is a practical choice for front suspension repairs on the driver's side for this model. The original design ensures proper wheel guidance, compliance with factory geometry, and correct interaction with the braking system, helping to restore the vehicle's stability and predictable behavior on the road.