Brake Caliper Mercedes SLK R171 Front Left N/S Carrier 57 300X28 A0044203183

The front left brake caliper for Mercedes SLK R171 is an original component of the braking system, designed for installation on the front axle on the driver's side. Thanks to its design adapted for discs of increased diameter and thickness, it ensures stable pad guidance, even pressure application, and predictable vehicle behavior during braking, which translates to safe and repeatable system operation.

Specifications and technical data

• SKU: A0044203183
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0044203183
• Substitutable numbers: A0044203183, A 004 420 31 83
• Location on the vehicle: Front, Left
• Category: Other Brake Parts

Vehicle Application and Placement

The presented caliper is designed to work on the front left side of the Mercedes SLK R171 generation. Its placement on the vehicle is crucial for correct installation – the body, carrier, and mounting points are optimized for a specific side, ensuring proper alignment with the disc and hub.

A caliper configured in this way works with a disc of appropriately selected diameter and thickness, allowing for efficient heat dissipation and stable performance during repeated, stronger braking typical for sporty cars like the SLK R171.

Construction and Technical Characteristics

The caliper features an integrated carrier, responsible for precise guidance of the brake pads and maintaining their alignment with the disc. The design anticipates the use of a piston with a diameter adapted to the standard hydraulic system, ensuring proper working pressure and linear braking force modulation.

Key structural features of this component include:

• dedicated mounting for the front axle knuckle on the Mercedes SLK R171,
• geometry adapted for discs of increased diameter and thickness,
• stable pad guidance within the carrier, limiting jamming and uneven wear,
• compatibility with the standard Mercedes hydraulic system.

Thanks to these features, the caliper maintains the factory braking pedal feel while providing sufficient thermal reserve for dynamic driving.

Benefits of Using an Original Caliper

Using an original brake caliper on the Mercedes SLK R171 ensures the integrity of the entire braking system according to the manufacturer's specifications. The correct geometry, mounting bolt spacing, and compatibility with standard brake lines minimize the risk of installation issues and the need for modifications to other components.

The main advantages of this solution include:

• factory fitment to the knuckle, disc, and pads intended for this model,
• predictable braking characteristics consistent with ABS/ESP system settings,
• easier diagnostics and servicing due to compliance with manufacturer documentation,
• possibility of using standard service kits (seals, guides, pads).

Such component selection is particularly important for high-performance vehicles where the stability and repeatability of the braking system directly impact safety and driving comfort.

Condition, Inspection, and Preparation for Installation

This item is from the group of used Mercedes parts, meaning standard servicing is recommended before installation: cleaning, inspection of working surfaces, verification of guides, and – if necessary – replacement of seals and rubber wear parts. This approach restores the caliper to full functionality and ensures long-term, stable operation within the braking system.

When replacing the caliper, it is also advisable to assess the condition of the discs, pads, and brake lines to avoid uneven wear and maintain the consistency of the entire system. A properly prepared and installed caliper will provide the Mercedes SLK R171 driver with confident, repeatable braking, both in daily use and during more dynamic driving.

If you are planning a comprehensive repair or upgrade of the braking area in your Mercedes and need other components from the same group, such as calipers, carriers, or brackets, check the available parts in the Other Mercedes category.

To better understand the differences in brake system construction between standard and sport versions and to consciously select components for your car, it is worth reading the article discussing, among other things, the characteristics of brakes in high-power models: Audi RS vs. Other Models – What Lies Under the Hood and Chassis?.