Mercedes W205 AMG Brake Caliper Rear Right O/S Brake Unit A2054216898

Mercedes W205 AMG Brake Caliper Rear Right O/S Brake Unit is an original brake system component designed for installation on the rear right axle of the vehicle. Being a factory-original part from the Mercedes range, it ensures a precise fit to the hub, brake disc, and carrier, as well as the correct operating characteristics for the sport-tuned AMG system. This is the ideal solution for users who expect predictable brake performance and the maintenance of the vehicle's factory specifications.

Specifications and technical data

• SKU: A2054216898
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054216898
• Substitutable numbers: A2054216898, A 205 421 68 98
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Purpose and vehicle placement

The presented caliper belongs to the Brake Calipers and Brackets category and is intended for installation on the rear right side of the drive axle in W205 body styles with the AMG package. The placement on the vehicle is strictly defined, which is why this component should be used exclusively as a rear right caliper, ensuring correct brake system geometry, proper brake pad guidance, and even distribution of braking force.

Technical characteristics of the caliper

The AMG caliper for the W205 has been designed to work with appropriately matched brake discs and pads, ensuring stable operating pressure across the entire load range. The design provides precise brake pad guidance, which reduces uneven wear and minimizes the risk of localized overheating of the friction surfaces. The original construction helps maintain the factory brake pedal feel, both during relaxed driving and during dynamic emergency braking.

As a component originating from the AMG system, the caliper is adapted to higher thermal and mechanical loads than standard solutions, which is significant during frequent braking from higher speeds. The appropriate rigidity of the housing limits deflection under high system pressure, which translates into a more direct brake feel.

Benefits of using an original Mercedes caliper

Choosing an original Mercedes AMG brake caliper allows you to maintain the consistency of the entire brake system according to the manufacturer's standards. Key advantages include:

• factory fitment to the hub, disc, and carrier,
• maintenance of the serial braking force characteristics on the rear axle,
• compatibility with factory safety systems (ESP, electronic stability control systems),
• visual consistency with other elements of the AMG package.

As a result, the driver receives predictable, repeatable brake performance, which is important in both daily operation and emergency situations. The original brake caliper reduces the risk of installation issues, leaks, or uneven pad wear, which are typical of imprecise aftermarket replacements.

Condition of the component and practical application

The offered caliper is a used part, which in the case of original Mercedes components represents a reasonable compromise between cost and quality. This type of component is particularly recommended for:

• repairs following one-sided damage to the brake system on the rear right axle,
• restoring full system efficiency after the seizure of guide pins or the piston,
• comprehensive renovation of the brake system in W205 AMG models, where maintaining the original specification is essential.

It is always worth verifying the selection of the correct caliper for a specific body and engine version using the OEM part number and interchangeable numbers in the product's technical specification to avoid compatibility issues.

Technical support and additional materials

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

When selecting used brake system components, it is worth following a proven procedure for checking technical condition, compatibility, and safety. A detailed list of steps to pay attention to when purchasing discs, calipers, and ABS components can be found in the article: Second-hand brake systems: how to safely choose discs, calipers, and ABS?

Additional information on the benefits of using original used components in cars of this brand is also provided in the guide: Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?