Brake Caliper Mercedes W205 Rear Right O/S Wheel Braking Unit M264 A2054230281

Brake Caliper Mercedes W205 Rear Right O/S Wheel Braking Unit is an original braking system component designed for installation on the rear right axle of Mercedes W205 class vehicles with the M264 unit. This used caliper provides a functional service solution, allowing for the preservation of factory braking characteristics and consistency with other system components. By maintaining the OEM design, it ensures stable pad guidance, repeatable piston operation, and predictable brake pedal response, which translates into safe vehicle operation.

Specifications and technical data

• SKU: A2054230281
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054230281
• Substitutable numbers: A2054230281, A 205 423 02 81
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Purpose and vehicle placement

The presented caliper is dedicated for installation on the rear right side of the vehicle, which is significant both in terms of construction and hydraulics. Proper placement ensures correct piston operation relative to the disc and the correct direction for bleeding the system. Using a component consistent with the factory Mercedes design allows for maintaining an even distribution of braking force between the left and right sides of the axle, which is crucial for driving stability during heavy braking.

Technical characteristics of the caliper

The caliper belongs to the Brake Calipers and Brackets group, meaning it is responsible for the precise guidance of pads relative to the disc and the conversion of hydraulic pressure into clamping force. The design provided by the manufacturer ensures:

• adequate body rigidity, limiting deflection under high operating pressure,
• stable pad guidance, which promotes even pad wear,
• proper cooperation with the factory brake line and steering knuckle mounting.

Thanks to the preservation of the original geometry, the caliper works with stock discs and pads intended for the rear axle in Mercedes W205 models with the M264 engine, without the need to modify other system elements.

Benefits of using an original Mercedes caliper

Choosing an original brake caliper for a Mercedes brings a number of practical service and utility benefits. The most important include:

• Factory fitment – maintaining original mounting points and hydraulic connections facilitates installation and minimizes the risk of leaks.
• Consistency with the braking system – the caliper has been designed to work with the control and brake force distribution system in a given model, which promotes predictable car behavior.
• Optimal operating characteristics – the properly selected piston diameter and guide design support stable, repeatable braking in typical road conditions.
• Reasonable service solution – a used OEM component allows for reducing repair costs while maintaining a design consistent with the manufacturer's project.

Application in service practice

This brake caliper will work well both for standard replacement of a worn component and for repairs after mechanical damage within the rear axle area. It can be used in:

• brake system repairs after one-sided pad wear or seized guides,
• restoring functionality after collisions involving the rear right side of the suspension,
• preventive maintenance, when the existing caliper shows leaks or uneven piston operation.

To maintain full system functionality, it is recommended to have the installation performed by a workshop with experience in Mercedes vehicles and to bleed the entire rear circuit after completing the work.

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

When selecting used braking system components – especially calipers – it is worth following a proven procedure for verifying technical condition, model compatibility, and operational safety; you can find practical tips in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?.