Front Brake Caliper Mercedes W203 R171 Left N/S Wheel Unit A0034202483

Front Brake Caliper Mercedes W203 R171 Left N/S Wheel Unit is an original brake system component designed for the front left side, specifically engineered for Mercedes C-Class W203 and SLK R171 models. This used caliper provides a functional service solution for drivers looking to restore proper brake performance while maintaining factory operating characteristics.

Specifications and technical data

• SKU: A0034202383
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0034202383
• Substitutable numbers: A0034202383, A 003 420 23 83
• Location on the vehicle: Front, Left
• Category: Calipers & Brackets

Purpose and fitment

This front left brake caliper is structurally adapted for operation on the front axle, on the driver's side, in Mercedes W203 and R171 vehicles. The vehicle placement has been factory-defined as Front – left, which allows for precise fitment to the steering knuckle, brake disc, and brake pads on the correct side of the vehicle.

The original Mercedes origin ensures the preservation of correct mounting geometry, proper spacing, and compatibility with the factory brake system, without the need for modifications or adaptations.

Construction and function in the brake system

The Front Brake Caliper Mercedes W203 R171 Left N/S Wheel Unit is responsible for evenly pressing the pads against the disc during braking, stabilizing the braking force on the driver's side. Its tasks include:

• guiding the brake pads relative to the disc,
• transferring pressure from the hydraulic system into clamping force,
• maintaining the correct working position relative to the hub and disc.

Thanks to its factory design, the caliper works with the stock master cylinder, lines, and other system components, ensuring consistent, predictable operation of the entire front axle.

Condition, service application, and benefits of installation

The item is offered as a used part, which allows for an economical repair of the brake system while maintaining the manufacturer's original specifications. This type of solution is particularly beneficial for:

• replacing a damaged or seized caliper on the left side,
• restoring even brake performance on the front axle,
• servicing vehicles where compliance with factory components is a priority.

Selecting an original caliper for a specific Mercedes model minimizes the risk of installation issues, leaks, or uneven braking, and also facilitates future maintenance.

Support in selection and additional technical information

The product has assigned OEM part numbers and interchangeable numbers, which facilitates verification of compatibility with a specific engine version and vehicle model year. In case of doubt, it is worth comparing the markings with vehicle data or consulting a mechanic to confirm full compatibility before installation.

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, brackets, or mounting holders, check the available parts in the Mercedes brake calipers and holders category.

When selecting used brake system components – including calipers, discs, or ABS parts – a practical guide describing how to safely assess the condition of parts and avoid poor purchases will be helpful: Second-hand brake system: how to safely choose discs, calipers, and ABS?.