Mercedes W164 X164 Brake Disc Set Rear Left Right Wheel N/O/S Braking Unit

Mercedes W164 X164 Brake Disc Set Rear Left Right Wheel N/O/S Braking Unit is a set of original components from the Brake discs group, designed for the rear axle of Mercedes vehicles from the W164 and X164 series. The set includes both the left and right sides, which facilitates consistent maintenance of the braking system and helps maintain uniform performance parameters across the entire axle.

Specifications and technical data

• SKU: A1644230612
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644230612
• Substitutable numbers: A1644230612, A 164 423 06 12
• Location on the vehicle: Rear, Right, Left
• Category: Brake Disc Rotors

Purpose and vehicle placement

The presented set of discs is prepared for installation on the rear axle, on both the left and right sides. Such specific fitment for the vehicle location reduces the risk of errors when selecting parts and simplifies the planning of service work within the braking system.

A complete approach to the rear axle allows for maintaining consistent friction parameters, stability during braking, and predictable vehicle behavior in emergency situations. This is particularly important in heavier SUV models, which include the W164 and X164 series designs.

Technical characteristics and role in the braking system

The discs in this set work in tandem with brake pads, responsible for effectively converting kinetic energy into heat. The properly selected material and geometry of the discs promote stable friction, which translates into repeatable braking efficiency and predictable wear of friction components.

In practice, this means:

• maintaining stable braking force on both wheels of the rear axle,
• reducing vibrations and pulsations on the brake pedal when installed correctly,
• better vehicle control during intensive braking from higher speeds.

Thanks to the use of an original solution dedicated to specific Mercedes models, the braking system retains parameters close to factory specifications, which is important both from the point of view of safety and the durability of other components.

Condition, origin, and benefits of choosing a used set

The offered set of brake discs is an aftermarket item, which allows for optimizing vehicle maintenance costs while maintaining a design consistent with the manufacturer's factory specifications. Choosing a used set is particularly attractive in the case of extensive premium-class models, where new original parts involve higher financial outlays.

In practice, such a choice can be beneficial when:

• you are planning a phased renovation of the braking system and want to maintain the original specification,
• you are looking for a compromise between cost and maintaining the factory design,
• you need reference parts for further diagnostics or comparison with currently installed elements.

Selection, compatibility, and expert support

To correctly match this set to a specific version of a Mercedes, it is worth verifying compatibility with the vehicle documentation and the parameters of the braking system used in the given unit. It is helpful to compare the design of the discs with the elements currently installed on the rear axle, especially in terms of diameter, working thickness, and mounting method – without providing specific numerical values, but rather through visual and structural matching.

If you want to deepen your knowledge on the safe selection of aftermarket elements, practical tips can be found in the article: Second-hand braking system: how to safely select discs, calipers, and ABS?. This is a valuable source of information that helps in making informed purchasing decisions when assembling used brake components.

Expanding the braking system in a Mercedes

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 sets of discs, compatible pads, or supplementary brake lines, check the available parts in the Mercedes Brake discs category.

Such an approach allows you to build a coherent set of components, in which every element of the braking system works in a predictable way, which translates into driving safety and stable vehicle behavior in daily operation.