Mercedes W212 Brake Caliper Rear Left N/S Wheel Brake A2124230281

The Mercedes W212 Rear Left Brake Caliper is a component of the braking system designed for installation on the rear left axle of Mercedes E-Class W212 vehicles. The used caliper serves as a functional service solution for drivers who wish to restore proper braking effectiveness while maintaining original operational characteristics. By preserving the original mounting geometry and pad guide, this component ensures precise and stable system operation.

Specifications and technical data

• SKU: A2124230281
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2124230281
• Substitutable numbers: A2124230281, A 212 423 02 81
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Vehicle Application and Placement

The presented caliper is dedicated for installation on the rear left side of the vehicle, which is crucial for the correct distribution of braking forces on the rear axle. Proper matching to the specific position in the car minimizes the risk of uneven pad wear and ensures stable disc guidance during intensive braking.

This component operates in close proximity to the brake disc and pads, responsible for applying pressure to the working surface. The correct selection of the caliper for the vehicle's axle and side is important for both safety and the durability of other braking system components.

Technical and Functional Characteristics

The caliper belongs to the Brake Calipers and Brackets group, meaning it is designed to work with the original Mercedes braking system. The design intended for the W212 platform allows for the preservation of standard operating parameters, such as clamping force, piston operation uniformity, and compatibility with original brackets and mounting points on the steering knuckle.

A properly selected rear left caliper influences:

• stable pad guidance relative to the disc,
• repeatable braking force on the rear axle,
• correct cooperation with braking assistance systems,
• reduction of vibrations and noise during system operation.

Benefits of Using an Original Mercedes Caliper

Choosing a caliper dedicated to the Mercedes W212 allows for the preservation of the structural integrity of the braking system. The original solution ensures proper fitment with the hub, disc, and brake lines, which facilitates installation and reduces the need for additional modifications. This makes servicing predictable and minimizes the risk of leaks or improper component alignment.

A used component can be an economical alternative to new parts, while maintaining the original design and operational parameters. This solution is particularly beneficial for routine repairs where the goal is to restore the braking system's functionality without altering its original construction.

Service Application and Part Selection

This brake caliper is suitable for situations where replacement of a damaged or excessively worn component on the rear left axle is necessary. It can be used for both standard repairs and comprehensive braking system servicing, including the replacement of discs, pads, and lines. The selection of the correct caliper for a specific Mercedes W212 version should consider the vehicle's configuration and the braking system parameters specified by the manufacturer.

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and require other components from the same group, such as additional calipers, brackets, or mounting holders, check the available parts in the Mercedes Brake Calipers and Brackets category.

Safe Choice for Used Braking System Components

When selecting a used brake caliper, it is advisable to pay attention to the condition of the working surfaces, threads, mounting points, and the overall seal of the component. It is also important that the component is compatible with the specific vehicle model's configuration, which translates to proper cooperation with brake discs, pads, and lines.

For drivers who want to streamline the process of selecting used braking components, a guide describing the key verification stages for such parts will be helpful. Detailed tips can be found in the article "Second-Hand Braking System: How to Safely Choose Discs, Calipers, and ABS?", which discusses practical criteria for assessing the technical condition and compatibility of components with a specific car.