Brake Caliper Mercedes S205 Rear Right O/S Electric Handbrake 300 A2054230481

The Mercedes S205 Rear Right Electric Parking Brake Caliper is an original Mercedes brake system component, designed for installation on the rear right axle of the vehicle. With its integrated electric parking brake, it ensures precise operation, stability when parked, and consistency with the factory brake system architecture.

Specifications and technical data

• SKU: A2054230481-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054230481
• Substitutable numbers: A2054230481, A 205 423 04 81, A2054230206, A 205 423 02 06, A0009061303, A 000 906 13 03
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Purpose and Function in the Braking System

The presented caliper is a component from the Brake Calipers and Brackets group, responsible for generating braking force on the rear right side of the vehicle. The design adapted for the electric parking brake allows for vehicle parking control via the electronic system, without the need for a traditional mechanical lever.

Its placement on the vehicle (rear – right side) has been factory-optimized for:

• even distribution of braking forces on the rear axle,
• cooperation with safety systems (ABS, ESP, hill start assist),
• proper guidance of brake pads relative to the disc.

Original Origin and Fitment

The caliper has been designed as a Mercedes part, ensuring full compliance with the vehicle manufacturer's factory requirements. The original mounting geometry, appropriately selected guide profiles, and the correct operating characteristics of the electric actuator translate to:

• secure fitment to the steering knuckle and bracket on the rear right side,
• correct positioning relative to the brake disc,
• seamless integration with the vehicle's electrical system.

This makes installation predictable for the mechanic and reduces the risk of compatibility issues compared to non-original aftermarket parts.

Technical and Operational Characteristics

As a component integrated with the electric parking brake, the caliper works with the vehicle's control module, which manages the engagement force and release process of the brake. This configuration allows for:

• automatic brake engagement upon ignition off (depending on car configuration),
• precise application of clamping force in parking mode,
• consistent operation with driver assistance systems.

The product is categorized as a used part, which in practice means the possibility of reducing repair costs while maintaining the original manufacturer's specifications. Combined with proper installation and appropriately selected brake pads, it allows for stable braking performance in everyday use.

Selection, Installation, and Service Aspects

When selecting a caliper for a specific vehicle instance, it is crucial to verify compatibility with the OEM part number and interchangeable numbers – all this information is found in the technical specifications section. It is also worth paying attention to:

• correct mounting side (rear, right side),
• type of electric parking brake used in the specific model,
• condition of cooperating elements (disc, pads, brake lines).

During installation, it is recommended to perform an adaptation of the electric parking brake using an appropriate diagnostic tester to ensure correct actuator calibration and avoid errors in the brake system controller.

Benefits of Choosing an Original, Used Caliper

Choosing an original, used brake caliper allows for cost control while maintaining the factory design of the braking system. For many users, this is a sensible compromise between price and quality, especially for components that interact with advanced vehicle electronics.

If you want to better understand how to safely use salvaged parts in your braking system and how to optimize your repair budget, read our article: Brake Calipers Under the Microscope – How to Reduce Repair Costs by Choosing Original Used Parts.

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