BMW F20 F21 F30 F31 Front Right O/S Brake Caliper Housing Carrier 57/24

BMW F20 F21 F30 F31 Front Right O/S Brake Caliper Housing Carrier is an original component from the Brake calipers and carriers group, designed for installation on the front right axle in selected BMW F-series models. The housing serves as a structural base for the pistons and brake pads, ensuring stable guidance of the friction linings and repeatable, predictable operation of the braking system. This is a solution for users who are looking for a factory fit and want to maintain the correct performance parameters of the brakes in their BMW.

Specifications and technical data

• SKU: 6857688-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6857688
• Substitutable numbers: 34116857688, 6857688, 34116850971, 6850971
• Location on the vehicle: Front, Right
• Category: Calipers & Brackets

Purpose and fitment for BMW

The presented housing is dedicated to the front right axle in selected BMW F-series models, such as the F20, F21, F30, or F31. Thanks to a design consistent with factory solutions, the key geometries of the mounts, guides, and surfaces interacting with the carrier and brake pads are preserved. Proper positioning on the vehicle minimizes the risk of installation issues and allows for maintaining the correct braking characteristics.

Construction of the brake caliper housing

The brake caliper housing acts as a rigid, deformation-resistant component that transfers braking forces from the pistons to the pads and the disc. The 57/24 version has been designed to ensure:

• stable guidance of brake pads throughout the entire operating range,
• adequate rigidity during repeated heating and cooling cycles,
• correct positioning relative to the brake disc. This solution supports even wear of the friction linings and repeatable braking force, which translates into predictable vehicle behavior during intensive braking.

Benefits of using an original housing

Using an original caliper housing in a BMW F-series allows for maintaining the factory performance parameters of the braking system. The most important advantages include:

• factory fitment to the steering knuckle and disc, without the need for modifying suspension components,
• compatibility with stock pads and carriers intended for this configuration,
• maintaining the correct working position of the pistons relative to the disc, which reduces the risk of overheating and uneven wear. For users who are upgrading or restoring the efficiency of their braking system, such a housing is a solid base for further brake set configuration.

Characteristics of the used product

The offered housing comes from the secondary market, which means it is a used component. In practice, this allows for an economical replacement of a damaged or corroded housing while maintaining the original BMW specification. Before installation, standard service procedures are recommended, including cleaning, inspection of mating surfaces, and, if necessary, replacement of wear items such as seals or guide pins, in accordance with the vehicle manufacturer's recommendations.

Expanding the BMW braking system

If you are planning a comprehensive repair or upgrade of the braking area in your BMW and need other components from the same group, such as additional housings, carriers, or brackets, check out the available parts in the BMW Brake calipers and carriers category.

Safe selection of used brake components

When choosing a used caliper housing, it is worth paying attention to the condition of the working surfaces, threads, and the mounting points for the brake line and carrier. A good practice is to compare the design with the factory-installed component and verify compatibility with the vehicle's technical documentation. Detailed tips on assessing the condition and selecting used brake components can be found in the article: Second-hand braking system: how to safely select discs, calipers, and ABS?.