BMW F10 M5 F12 M6 Brake Caliper Front Left N/S Brake Housing Carrier 30/34/36

BMW F10 M5 F12 M6 Brake Caliper Front Left N/S Brake Housing Carrier is an original component from the Brake Calipers and Carriers group, designed to operate in a demanding, high-performance braking system. Thanks to its factory design, it ensures proper pad guidance, stable mounting to the steering knuckle, and predictable braking characteristics, in accordance with BMW manufacturer specifications.

Specifications and technical data

• SKU: 7845747-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7845747
• Substitutable numbers: 34117845747, 7845747, 34117845748, 7845748, 34112284101, 2284101, 34112284102, 2284102, BG
• Location on the vehicle: Front, Left
• Category: Calipers & Brackets

Purpose and fitment for BMW F10 M5 / F12 M6

The presented caliper is designed for installation on the front left side of the vehicle, which is crucial for the correct routing of the brake line, bleeder screw, and the load-bearing capacity of the entire system. The structural design and caliper housing are adapted to the high loads generated by the powerful engines of the BMW F10 M5 and F12 M6 models, as well as for operation with a multi-piston braking system with varying piston diameters.

Its original BMW origin ensures the maintenance of correct mounting geometry, proper offset relative to the disc, and compatibility with factory pads and discs intended for these body versions.

Technical construction and carrier function

The caliper serves as both the working housing and the carrier for the brake pads, ensuring their stable guidance during braking and retraction after the pedal is released. The design provides for the appropriate arrangement of pistons, which allows for even pressure of the pads against the disc, reduction of localized overheating, and improvement of the thermal stability of the entire system.

Precisely shaped guide slots and pad contact surfaces minimize the risk of jamming, uneven wear, and operational noise. As a result, the caliper can operate stably both in daily driving and in more dynamic conditions typical of M models.

Benefits of using an original, used caliper

Choosing an original, used BMW caliper is a solution that allows you to combine cost control with the preservation of the factory performance parameters of the braking system. Unlike many aftermarket replacements, the OEM component maintains precise positioning relative to the disc, proper housing rigidity, and compatibility with factory lines and hardware.

A used caliper with preserved base geometry is particularly beneficial for workshops and users who want to avoid fitment issues, uneven axle braking, or the need for additional mounting modifications. It is a practical solution for accident repairs, replacing a damaged caliper, or restoring full functionality to the braking system in high-performance vehicles.

Professional selection and operation

To fully utilize the potential of this component, it is recommended to install it in a pair with the corresponding caliper on the right side and to use pads and discs with parameters specified for the M5 / M6 versions. Proper installation, bleeding, and checking the condition of lines and brake fluid are crucial for achieving stable braking force and repeatable system operation.

If you want to better understand how calipers work and how to optimally use original recycled components in brake service, it is worth reading the guide: Brake calipers under the microscope: how to reduce repair costs by choosing proven recycled parts.

Expanding the BMW braking system – related components

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

For users who regularly use used components, a practical shopping guide may also be helpful: Safe online purchase of used car parts – a step-by-step guide, which describes, among other things, selecting parts by catalog numbers and vehicle specifications.