Mini R57 Rear Brake Caliper Housing Carrier Unit Left N/S 6779729

Mini R57 Rear Brake Caliper Housing Carrier Unit Left N/S is an original Mini brake system component, designed for installation on the rear left axle of the vehicle. This used caliper from this category ensures factory-fit, correct mounting geometry, and stable operation with other brake system components, which translates into predictable and safe braking performance.

Specifications and technical data

• SKU: 6779729
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 6779729
• Substitutable numbers: 6779729, 34206779729, 6779761, 34206779761
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and fitment for Mini

The presented caliper belongs to the Brake Calipers and Carriers category and has been designed specifically for Mini vehicles. The placement on the vehicle is the rear left side, which allows for precise fitment to factory mounts, brake lines, and the brake disc on that side of the axle.

Thanks to the original design, the caliper works with the stock brake master cylinder, lines, and brake pads intended for the specific model. This solution is particularly beneficial for repairs where maintaining the integrity of the entire brake system and adhering to the manufacturer's specifications is crucial.

Technical and functional characteristics

As a component from the brake caliper group, this part is responsible for evenly pressing the brake pads against the disc on the left side of the rear axle, stabilizing braking force and the distribution of forces between the wheels. The design intended for Mini ensures:

• appropriate caliper body rigidity,
• proper guidance of brake pads,
• compatibility with factory mounts and carriers,
• correct operation with the vehicle's safety systems.

A used OEM component is a good choice when you want to maintain the original braking characteristics without the need to use aftermarket replacements with uncertain parameters. Factory fitment reduces the risk of installation problems, unwanted play, or uneven pad wear.

Condition, origin, and service application

The caliper is offered as a used part, which allows for an economical repair of the brake system while maintaining the manufacturer's original specifications. This type of component is suitable both for standard replacement of a worn caliper and for post-accident repairs where it is necessary to restore full efficiency to the rear axle.

In workshop practice, such an element is often chosen as a service solution when the existing caliper shows signs of seizing, uneven braking, or leaks. Using an original caliper on the rear left side helps restore the balance of braking forces between the wheels and improve vehicle stability during emergency braking.

Support for selecting and upgrading the brake system

If you are planning a comprehensive repair or upgrade of the braking zone in your Mini and need other elements from the same group, such as additional calipers, carriers, or mounting brackets, check out the available parts in the Mini Brake Calipers and Carriers category.

When selecting used brake system components, it is worth following proven inspection and installation procedures. Detailed tips on the safe selection of discs, calipers, and related components can be found in the guide: Second-hand brake system: how to safely choose discs, calipers, and ABS?. This will make it easier for you to assess when replacing a caliper with a used OEM element is the right and safe solution.

Summary

Mini R57 Rear Brake Caliper Housing Carrier Unit Left N/S is a practical service solution for Mini owners who want to restore the efficiency of the rear brake system while maintaining the original design. The correct placement on the vehicle, factory fitment, and inclusion in the Brake Calipers and Carriers category make this part well-suited for both routine repairs and more extensive work on the brake system.