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

Mercedes R231 AMG Brake Caliper Brake Housing Rear Left N/S is a braking system component designed to work with a 320x24 brake disc. As part of the Complete brake kits group, it ensures consistent performance with other rear axle components, maintaining the braking characteristics intended for the AMG version. Using an original pre-owned part is a sensible choice for rear axle maintenance when you want to preserve the factory operating characteristics of the system.

Specifications and technical data

• SKU: A2314230981
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2314230981
• Substitutable numbers: A2314230981, A 231 423 09 81
• Location on the vehicle: Rear, Right
• Category: Brake Component Kits

Purpose and function in the braking system

The presented caliper is designed for installation on the rear left side of the vehicle, on an axle compatible with a 320x24 disc. It is responsible for evenly pressing the brake pads against the working surface of the disc, stabilizing braking force and maintaining the correct balance between the left and right sides of the vehicle.

The version dedicated to the AMG variant has been designed for higher thermal and dynamic loads, typical of high-performance cars. As a result, the system maintains consistent performance during intensive use, which translates into predictable vehicle behavior during braking.

Benefits of using an original AMG caliper

Using an original caliper instead of a worn or damaged component allows you to maintain the factory operating characteristics of the braking system. A design matched to a specific axle and disc diameter reduces the risk of uneven pad wear, disc overheating, or vehicle pulling during braking.

Key advantages include:

• maintaining the geometry and pad clamping force specified by the manufacturer,
• consistent operation with brake assist systems,
• easier diagnostics and maintenance due to the factory design.

For users considering the purchase of pre-owned braking system components, a guide describing the criteria for safely selecting such parts will be useful – detailed tips can be found in the article Second-hand braking system: how to safely select discs, calipers, and ABS?.

Selection, installation, and compatibility

To correctly select this caliper for a specific Mercedes model, you must verify compatibility with the R231 body version and the type of AMG braking system used on the rear axle. It is also essential to match it to a disc of the appropriate diameter and thickness to maintain the correct operating range of the pistons and proper pad guidance.

During installation, it is recommended to:

• check the condition of the mounting surfaces on the steering knuckle,
• verify brake lines and connection points,
• bleed the system after installation and check for connection leaks.

Professional installation allows you to fully utilize the potential of the original AMG caliper and reduces the risk of subsequent leaks or uneven system operation.

Application in a complete brake axle

This element is part of a broader group of Complete brake kits, which includes components that work together within a single axle. Replacing a caliper often goes hand in hand with checking discs, pads, and flexible hoses to restore uniform braking efficiency and vehicle stability.

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 discs, pads, or brake lines, check the available parts in the Complete Mercedes brake kits category.

Summary

Mercedes R231 AMG Brake Caliper Brake Housing Rear Left N/S is a solution for users who want to maintain factory braking characteristics and consistency with other system components. A pre-owned, original component allows for an economical yet technically correct repair of the rear axle, provided it is correctly selected and installed in accordance with service recommendations.