Brake Caliper Mercedes W203 CL203 Rear Right Wheel O/S Brake Unit 36/278

Mercedes W203 CL203 Rear Right Brake Caliper is an original part from the Brake Calipers and Brackets group, designed for the rear right axle of Mercedes C-Class vehicles of the W203/CL203 generation. This used caliper offers a functional solution for drivers who want to restore proper brake system operation while maintaining factory performance characteristics. Thanks to its structural compatibility with the factory braking system, this component ensures precise and predictable brake performance in everyday use.

Specifications and technical data

• SKU: A0034237598
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0034237598
• Substitutable numbers: A0034237598, A 003 423 75 98
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Purpose and Brake System Fitment

The presented caliper is dedicated for installation on the rear right side of the vehicle, which is crucial for correct brake force distribution and vehicle stability during emergency braking. The design, consistent with Mercedes factory solutions, ensures proper brake pad guidance relative to the disc and even wear of friction components.

Selecting a caliper with the correct placement on the vehicle minimizes the risk of installation issues, leaks, or uneven braking. In practice, this means that after correct installation, the braking system regains stable operating parameters, and the driver experiences predictable brake pedal response.

Construction and Function in the Braking System

As a component of the Brake Calipers and Brackets category, this part is responsible for pressing the pads against the disc and converting hydraulic pressure into braking force. The appropriate geometry of the caliper body and guides allows for:

• maintaining the correct position of the pads relative to the disc,
• stable piston operation throughout its full working stroke,
• efficient heat dissipation from the friction area.

By adhering to original design parameters, the caliper works in conjunction with the factory brake master cylinder, lines, and brake force regulator, which is important for safety and compliance with the vehicle manufacturer's specifications.

Benefits of Using an Original Mercedes Caliper

Using an original caliper in Mercedes W203/CL203 models helps maintain the integrity of the entire braking system with the factory design. The most significant advantages of this solution include:

• Mounting Compatibility – retained mounting points and hydraulic connections facilitate installation without the need for modifications.
• Consistent Braking Characteristics – the system maintains the manufacturer-intended balance between the front and rear axles.
• Economical Repair Option – a used caliper is a cost-effective way to restore brake system functionality without compromising the original design.

For workshops and private users, this translates to predictable installation times and reduced risk of problems arising from the use of components with uncertain specifications.

Professional Installation and Maintenance Tips

When replacing the rear right caliper on a Mercedes, it is advisable to simultaneously check the condition of the brake pads, disc, and brake line to avoid uneven system operation. It is recommended to:

• properly bleed the circuit after installation,
• check hydraulic connections for leaks under load,
• verify the free movement of guides and mounting points.

This approach allows for the full utilization of the installed caliper's potential and reduces the risk of subsequent service interventions.

Brake System Expansion and Technical Knowledge

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 Mercedes Brake Calipers and Brackets category.

When selecting used brake system components, it is advisable to rely on a proven verification procedure. A detailed list of steps on what to look for when purchasing calipers, discs, and ABS components can be found in the article: Used Brake System: How to Safely Choose Discs, Calipers, and ABS?.