Mercedes ML W164 X164 W251 Front Brake Caliper Housing Left N/S A1644202583

Mercedes ML W164 X164 W251 Front Brake Caliper Housing Left N/S is an original Mercedes brake system component designed for installation on the front left axle. This used caliper from this category ensures factory-fit, robust construction, and proper operating parameters, which are crucial for stable and predictable braking in heavier SUVs and vans.

Specifications and technical data

• SKU: A1644202583
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644202583
• Substitutable numbers: A 164 420 25 83, A1644202583, A 164 420 17 83, A1644201783, A 164 420 21 83, A1644202183
• Location on the vehicle: Front, Left
• Part type: Brake Caliper
• Category: Calipers & Brackets

Purpose and compatibility with Mercedes models

The presented caliper has been designed specifically for the ML W164, X164, and W251 series vehicles, meaning its geometry, mounting points, and compatibility with brake discs and pads meet the manufacturer's factory specifications. Installation on the front left side of the vehicle helps maintain the correct balance of braking force between axles and sides, which is particularly important in vehicles with a higher center of gravity. By using an original caliper from the Brake calipers and brackets category, you minimize the risk of compatibility issues, leaks, or uneven pad wear. This is the preferred solution for workshops that prioritize repeatable, predictable service results.

Construction and function in the brake system

The brake caliper plays a key role in the hydraulic brake system – it is responsible for precisely pressing the pads against the disc and maintaining stable operating pressure. In the case of the ML W164, X164, and W251 models, the construction of the front left caliper is adapted to higher thermal and mechanical loads resulting from the vehicle's weight and potential trailer towing. The original component ensures:

• proper cooperation with the factory brake master cylinder and lines,
• adequate body rigidity, reducing deflection during hard braking,
• even distribution of force on the pad surface, which promotes even wear. As a result, the brake system maintains stability, and the response to pedal pressure remains predictable, which has a direct impact on driving safety.

Benefits of choosing an original, used caliper

Choosing a used, original brake caliper for a Mercedes is a reasonable compromise between cost and quality. This type of part retains its factory design parameters while allowing for a significant reduction in repair costs compared to a new component from an authorized service center. The main advantages of such a solution include:

• factory fitment to the steering knuckle, disc, and pads in specific ML W164, X164, and W251 models,
• preservation of the original operating characteristics of the brake system,
• the possibility of economical repair while maintaining a high level of safety. If you want to better understand how to safely use recycled parts in the brake system and how to optimize service costs, check out the article Brake calipers under the microscope: How to effectively reduce brake system repair costs by choosing proven recycled parts.

Professional installation and service application

Due to the importance of the brake system for safety, the installation of the caliper on the front left side of the vehicle should be performed by an experienced service center. Proper bleeding, inspection of the condition of lines, discs, and pads, and verification of tightness after installation are essential to fully utilize the potential of this component. This type of caliper is frequently chosen by workshops specializing in the Mercedes brand because it allows for efficient repair execution without the need for system modifications or the use of adapters. It is a practical solution both for standard replacement of a worn component and for comprehensive brake system renovation.

Expanding the brake system in your Mercedes

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other components from the same group, such as additional calipers, brackets, or mounting holders, check out the available parts in the Mercedes brake calipers and brackets category.