Brake Caliper Mercedes S205 Rear Left N/S Electric Handbrake 300 A2054230381

Visual condition of the part

The product shows signs of use visible in the photos.

Brake Caliper Mercedes S205 Rear Left N/S Electric Handbrake is an original Mercedes braking system component, designed for installation on the rear left axle of the vehicle. This used brake caliper with an integrated electric parking brake provides a functional service solution, allowing for the restoration of the braking system's efficiency while maintaining the factory design.

Specifications and technical data

• SKU: A2054230381-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054230381
• Substitutable numbers: A2054230381, A 205 423 03 81, A2054230106, A 205 423 01 06, A0009061203, A 000 906 12 03
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Technical characteristics and intended use

The presented brake caliper has been designed specifically for operation on the rear left side of the vehicle, which ensures proper geometric fitment to the hub, brake disc, and carrier. The integrated electric parking brake works with the factory control system in Mercedes vehicles, ensuring stable vehicle holding during parking and correct operation of the auto-hold function, if provided in the given configuration.

The original design of the caliper allows for proper guidance of the brake pads, even pressure application to the disc, and effective heat dissipation from the friction area. As a result, the braking system maintains predictable performance parameters, which is important for both safety and driving comfort.

Benefits of using an original Mercedes caliper

Using an original caliper in the Brake calipers and brackets category allows you to maintain the consistency of the entire braking system with the vehicle manufacturer's specifications. Key advantages of this solution include:

• factory fitment to the mounting points and suspension geometry on the rear left side,
• proper cooperation with the electric parking brake and the vehicle's electrical installation,
• maintenance of the braking force characteristics on the rear axle as intended by the manufacturer,
• reduced risk of calibration issues and system errors after component replacement.

For the user, this means more predictable vehicle behavior during emergency braking, even pad wear, and stable operation of assistance systems, such as traction control or electronic stability control.

Application in service and diagnostics

The used rear left brake caliper with electric handbrake is particularly useful in situations where the existing component has suffered mechanical damage, guide pin seizure, or electric actuator failure. Replacing it with an original component allows for:

• restoring proper parking brake operation without the need for installation modifications,
• maintaining compatibility with factory controller software,
• reducing assembly time thanks to the manufacturer-intended mounting method.

This component fits well into professional braking system repairs, where repeatability of parameters and compliance with the vehicle manufacturer's service documentation are essential.

Selecting a used caliper and operational safety

When choosing a used brake caliper, it is important to pay attention to compatibility with the specific body version and braking system, as well as the proper operation of the electric module. A correctly selected component allows for maintaining stable pressure in the brake circuit and proper functioning of parking features, which directly affects the safety of vehicle operation.

If you want to analyze in detail what to look for when purchasing used braking system components, such as discs, calipers, or ABS parts, it is worth checking out the guide: Second-hand braking system – how to safely choose discs, calipers, and ABS?. The article contains a practical checklist useful when planning a repair.

Expanding your Mercedes braking system repair

If you are planning a comprehensive repair or upgrade of the braking area in your Mercedes and need other components from the same group, such as additional calipers, mounting brackets, or guide supports, check out the available parts in the Mercedes brake calipers and brackets category.