Brake Caliper Mercedes W164 ML 63 AMG Rear Left N/S Brake Unit A1644232998

Visual condition of the part

The product shows signs of use visible in the photos.

Brake Caliper Mercedes W164 ML 63 AMG Rear Left N/S Brake Unit is an original brake system component from the Brake Calipers and Brackets group, designed for installation on the rear left axle of the vehicle. The design, tailored to the AMG version specifications, ensures stable brake system operation and proper pad guidance on the disc. This used component allows for a technically correct repair of the system while maintaining factory geometry and braking characteristics.

Specifications and technical data

• SKU: A1644232998
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644232998
• Substitutable numbers: A1644232998, A 164 423 29 98
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and fitment

The presented caliper has been designed specifically for the rear left side of the drive axle in the Mercedes ML-Class W164 generation, 63 AMG version. This ensures compatibility with the factory mounting, bolt spacing, and carrier geometry, which facilitates installation and reduces the risk of fitment issues with the hub, disc, and brake pads.

By maintaining the manufacturer's original design, the caliper works with the vehicle's stock hydraulic system, ensuring even distribution of braking force between the right and left sides and stable operation of assistance systems, such as the electronic stability program.

Construction and performance parameters

The caliper is a complete brake unit for one side of the axle, including the working body with a piston and mounting points for the carrier and brake line. The design, intended for the high thermal loads typical of the AMG version, ensures adequate rigidity and resistance to deformation during intensive braking.

Original manufacturing promotes proper pad-to-disc pressure, which translates into predictable brake pedal response, consistent braking force, and reduced uneven wear of the friction linings. This is particularly important in high-performance vehicles where the brake system operates under increased load ranges.

Condition of the component and benefits of using a used part

The offered caliper is a used part, which allows for an economical repair of the brake system while maintaining the manufacturer's original specifications. Compared to low-budget aftermarket replacements, using a factory component helps maintain consistent braking characteristics with the other elements of the system.

Choosing an original used caliper is especially beneficial for premium vehicles, where compatibility with factory safety systems and predictable vehicle behavior during emergency braking are paramount. This solution helps reduce service costs while maintaining high system performance quality.

Role in the AMG brake system

In the 63 AMG version, the brake system is designed for dynamic driving, which is why a properly selected caliper on the rear left axle is crucial for vehicle stability when braking from higher speeds. A properly functioning component ensures:

• even distribution of braking force between the rear axle wheels,
• consistent cooperation with the vehicle's electronic systems,
• maintenance of the proper balance between the front and rear axles.

As a result, the driver receives a predictable brake system response, which is important both in daily use and in situations requiring rapid deceleration.

Technical support and selection of used components

When selecting used brake system components, it is worth paying attention to structural compatibility, the condition of working surfaces, and the completeness of the part. A detailed list of aspects to check before installation can be found in the article: Second-hand brake system: how to safely choose discs, calipers, and ABS?. This is a practical supplement to your knowledge when planning repairs based on used parts.

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, carriers, or brackets, check the available parts in the Mercedes Brake Calipers and Brackets category.