Mercedes W205 Brake Caliper Rear Left N/S Wheel Braking Unit A2054230181

Mercedes W205 Rear Left Brake Caliper is an original part from the brake calipers and brackets category, designed for installation on the rear left axle of Mercedes W205 class vehicles. This used OEM component ensures factory fitment, predictable brake system performance, and consistency with other system elements.

Specifications and technical data

• SKU: A2054230181
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054230181
• Substitutable numbers: A2054230181, A 205 423 01 81
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and Brake System Fitment

The presented caliper is designed as a rear left axle component for Mercedes W205 models, guaranteeing correct positioning relative to the disc, pads, and brake lines. Its placement on the vehicle is precisely defined, providing mechanics or users with clear guidance on where to install this component within the braking system.

Thanks to its manufacturer-standard construction, the caliper works seamlessly with the factory brake master cylinder, lines, and accessories, maintaining appropriate clamping force and operational stability during emergency braking and daily use.

Technical and Functional Characteristics

The brake caliper is responsible for evenly transferring hydraulic force to the brake pads on the rear left side. Its design ensures:

• stable pad guidance relative to the disc,
• adequate body rigidity during intense braking,
• serviceability (pad replacement, system bleeding),
• compatibility with factory Mercedes W205 brake system components.

As an OEM Mercedes part, the caliper was originally designed to maintain correct system geometry, which translates to predictable brake force modulation and even pad wear.

Condition, Origin, and Practical Application

The offered brake caliper is a used part, allowing for economical brake system repair while maintaining original manufacturer specifications. This solution is particularly beneficial for post-accident repairs, rear axle refurbishment, or replacement of a damaged left-side caliper.

In practice, installing such a component enables:

• restoration of correct rear brake circuit operation,
• maintenance of consistency with the factory Mercedes W205 configuration,
• reduction of service costs while retaining OEM parts.

For workshops and individual users, this means faster repair completion and easier future diagnostics, as the caliper's operating parameters remain consistent with the vehicle manufacturer's design.

Why Choose the Mercedes W205 Rear Left Brake Caliper

Choosing an original rear left caliper for the Mercedes W205 primarily offers guaranteed fitment and predictable brake system performance under all conditions. This component from the brake calipers and brackets category was developed specifically for this vehicle generation, minimizing the risk of installation issues and improper brake function.

If you are planning comprehensive rear axle service, consider other Mercedes brake calipers and brackets. You can use the dedicated subpage for this: Mercedes brake calipers and brackets, where you will find related parts from the same brand and category.

Safe Selection of a Used Brake Caliper

When selecting a used caliper, it is crucial to pay attention to vehicle model compatibility, placement on the vehicle, and the part's origin. Correct component selection directly impacts braking effectiveness, even pad wear, and vehicle stability during emergency braking.

If you wish to deepen your knowledge on safely choosing used brake system components, consult the guide: Used Brake System: How to Safely Select Discs, Calipers, and ABS?. The article includes a practical checklist to help assess used components and make informed purchasing decisions.