Brake Caliper Mercedes W164 ML 63 AMG Front Right O/S Brake Unit A1644214098

Visual condition of the part

The product shows signs of use visible in the photos.

Brake Caliper Mercedes W164 ML 63 AMG Front Right O/S Brake Unit is an original brake system component designed for the front axle on the passenger side. Thanks to its factory design, Mercedes ensures precise brake pad guidance, stable braking force, and consistency with other system components. This is a solution for users who want to maintain the original braking characteristics of the 63 AMG version while optimizing service costs by using a pre-owned part.

Specifications and technical data

• SKU: A1644214098
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644214098
• Substitutable numbers: A1644214098, A 164 421 40 98
• Location on the vehicle: Front, Right
• Category: Calipers & Brackets

Purpose and fitment

The presented caliper has been designed specifically for the Mercedes M-Class W164 generation in the 63 AMG version, intended for the front axle on the right side. This ensures the correct positioning of the bleeder screw, mounting points, and brake line ports relative to the steering knuckle and brake disc, which facilitates installation and reduces the risk of service errors. The caliper construction is adapted to the high loads typical of powerful AMG engines, ensuring stable performance under intensive use.

Technical specifications of the caliper

The caliper belongs to the Brake Calipers and Brackets category, responsible for converting hydraulic pressure into clamping force of the pads against the disc. The caliper body is manufactured using the manufacturer's standard production technology, which guarantees appropriate rigidity and resistance to thermal deformation. The guide system and brake pad seats are configured to ensure even pad wear and a stable braking point.

The component features dedicated mounting points for the steering knuckle and prepared ports for the brake line and bleeder screw, allowing for the maintenance of the factory hydraulic system routing. This makes service predictable, and the operation of the brake system remains in line with Mercedes engineering standards.

Benefits of using an original pre-owned caliper

Choosing an original, pre-owned caliper for the Mercedes W164 ML 63 AMG allows you to balance cost control with the preservation of factory specifications. Compared to many aftermarket replacements, the original component provides:

• consistency with the factory AMG brake system,
• proper fitment to the steering knuckle and disc on the right side,
• maintenance of the braking force characteristics intended by the manufacturer.

The pre-owned condition means the component has been previously used but can still perform its function after proper installation and potential service (e.g., replacing seals or guides if deemed necessary by a mechanic). For many users, this is a reasonable compromise between cost and functionality, especially in the case of specialized versions like the 63 AMG.

Professional installation and operational safety

Due to its critical role in the brake system, it is recommended that the caliper be installed by an experienced service center that will ensure proper bleeding, correct tightening torques, and inspection of cooperating components (discs, pads, lines). A correctly installed caliper on the front right side ensures stable braking, even distribution of forces on the axle, and predictable vehicle behavior during emergency braking.

For additional support in selecting and assessing the condition of brake system components, it is worth checking the practical tips in the article: Second-hand brake system: how to safely choose discs, calipers, and ABS?. This is a helpful source of knowledge when planning service using pre-owned parts.

Upgrading the brake system in a Mercedes

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 additional calipers, brackets, or mounting hardware, check the available parts in the Mercedes Brake Calipers and Brackets category.

This allows you to select a consistent set of components in one place, which facilitates service and helps maintain the uniform performance characteristics of the entire brake system.