Mercedes W204 Brake Caliper Rear Right O/S Wheel Brake Unit A2044231881

Mercedes W204 Rear Right Brake Caliper A2044231881 is an original part from the Brake Calipers and Brackets group, designed for the rear right axle of the vehicle. The construction, compliant with manufacturer standards, ensures proper cooperation with the braking system, stable pad guidance, and repeatable braking parameters. This is a solution for users seeking factory fitment and wishing to maintain the braking characteristics intended for Mercedes W204 models.

Specifications and technical data

• SKU: A2044231881-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2044231881
• Substitutable numbers: A2044231881, A 204 423 18 81, A2044230106, A 204 423 01 06
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Vehicle Application and Placement

The presented caliper is designed for installation on the rear right side of the vehicle, which is crucial for correct brake force distribution and cooperation with other system components. Proper placement on the vehicle minimizes the risk of uneven pad wear, reduces braking vibrations, and supports driving stability in emergency situations.

The part comes from the Mercedes brand, ensuring correct mounting geometry, position relative to the disc, and piston operating parameters. This is particularly important for integration with the factory ABS/ESP system, where dimensional tolerances and caliper operating characteristics affect the effectiveness of electronic safety systems.

Technical and Functional Characteristics

As a part from the Brake Calipers and Brackets category, this model is responsible for precisely pressing the pads against the disc, stable guidance of the friction material, and maintaining adequate hydraulic pressure. The design intended for the rear axle accounts for specific loads, different from the front axle, contributing to balanced operation of the entire braking system.

Factory origin ensures:

• correct fitment with the caliper bracket and wheel hub,
• compatibility with the specified type of brake pads and discs,
• appropriate operating characteristics of the piston and seals under typical operating conditions.

This allows the caliper to be used for standard replacement of worn parts as well as for restoring full braking system functionality after mechanical repairs.

Condition, Origin, and Service Application

The offered caliper is a used part, enabling economical brake system repair while maintaining original manufacturer specifications. Such components are often chosen by professional workshops and discerning users who prefer OEM parts from disassembly over aftermarket alternatives of uncertain quality.

The caliper is suitable for the following applications:

• standard replacement of a worn or damaged caliper on the rear axle,
• post-accident repairs to the suspension and braking system,
• restoring the factory brake configuration in Mercedes W204 models.

Selection, Compatibility, and Technical Support

The part has a dedicated OEM part number and associated interchangeable numbers, facilitating unambiguous identification in service catalogs and parts selection systems. When fitting to a specific vehicle instance, it is advisable to verify compatibility with the VIN and the braking system configuration (disc diameter, pad type, presence of assistance systems).

To deepen your knowledge on safely selecting used braking components, consult the guide: Used Braking System: How to Safely Choose Discs, Calipers, and ABS?. The article contains a practical checklist to help assess the condition of used components and avoid common purchasing mistakes.

Brake System Expansion in Mercedes

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