Mercedes R231 AMG Brake Caliper Brake Housing Rear Left N/S 320x24 A2314230981

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes R231 AMG Brake Caliper Brake Housing Rear Left N/S is an original braking system component designed for use with a 320x24 brake disc. Thanks to its factory design, Mercedes ensures precise brake pad guidance, stable clamping force, and predictable braking characteristics. This is a solution for users who expect consistency with factory specifications and reliable braking system performance.

Specifications and technical data

• SKU: A2314230981-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2314230281
• Substitutable numbers: A2314230281, A 231 423 02 81
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and vehicle placement

The presented caliper is designed for installation on the rear left axle, which is crucial for the correct distribution of braking forces in the vehicle. The design, adapted for the 320x24 disc, allows for effective heat dissipation and stable operation under typical road conditions and during more dynamic driving.

The placement on the vehicle is factory-defined; therefore, this component should be treated as dedicated to a specific side and axle, without being swapped with other calipers. This approach facilitates installation for the mechanic and minimizes the risk of errors during braking system maintenance.

Caliper design and operating characteristics

The AMG brake caliper in this model has been developed for stable, repeatable clamping of the pads against the disc. The properly selected geometry of the housing and guide pins promotes even wear of the friction linings, which translates into predictable vehicle behavior during braking.

The original Mercedes solution ensures:

• consistency with the factory braking system characteristics,
• appropriate rigidity of the caliper housing,
• correct compatibility with the disc of the specified diameter and working thickness,
• serviceability in accordance with the vehicle manufacturer's procedures.

Benefits of using an original, pre-owned caliper

Choosing an original Mercedes brake caliper from the secondary market is a solution that allows you to maintain the factory braking system configuration while optimizing repair costs. A used OEM component retains the design intended by the manufacturer, which facilitates installation and subsequent maintenance.

The main advantages of this solution include:

• preservation of factory mounting points and geometry,
• compatibility with original discs and pads intended for this version,
• the ability to use existing service infrastructure (tools, procedures, documentation),
• more predictable system behavior compared to replacements with unknown specifications.

If you want to better understand how to safely use reclaimed parts in the braking system and how to reduce service costs, it is worth reading the guide: Brake calipers under the microscope: How to effectively reduce braking system repair costs by choosing proven reclaimed parts.

Application in Mercedes vehicles and installation aspects

The discussed caliper was developed specifically for the Mercedes R231 platform in the AMG version, which means it is matched to the suspension characteristics, vehicle weight, and load distribution of this generation. Installation in place of the factory component does not require interference with the steering knuckle structure or changes to the hydraulic system, other than the standard bleeding procedure.

During replacement, it is recommended to:

• check the condition of the brake disc with the appropriate diameter and working thickness,
• verify brake lines and mounting points,
• check the guide pins and surfaces that interact with the pads,
• bleed the system in accordance with the vehicle manufacturer's procedure.

Mercedes braking system expansion – related components

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

For users who care about reducing vehicle downtime in the workshop and faster selection of compatible components from a single source, the following material may also be helpful: how a wide assortment in one warehouse actually reduces your car's downtime at the mechanic.