Rear Brake Caliper BMW F10 M5 F12 M6 Left N/S Brake Housing Carrier 44/24

Visual condition of the part 

The product shows signs of use visible in the photos. 

Rear Brake Caliper BMW F10 M5 F12 M6 Left N/S Brake Housing Carrier is an original brake system component from the Brake calipers and carriers group, designed for installation on the rear left axle. This used caliper provides a functional service solution for demanding users who expect factory-fitment and predictable brake system performance in BMW M-series sports models.

Specifications and technical data

• SKU: 7845815
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7845815
• Substitutable numbers: 7845815, 34217845815, 34217845817, 7845817
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and fitment

The presented caliper is designed as a component of the rear left brake system in BMW F10 M5 and F12 M6 models. The construction meets the manufacturer's factory requirements, which translates into proper brake pad guidance relative to the disc, stable operating pressure, and predictable braking characteristics under high loads typical of M-series units.

Thanks to the use of original mounting geometry and guides, the caliper works with factory accompanying components, such as carriers, pads, and flexible hoses, without the need for vehicle modifications.

Construction and operating parameters

The brake caliper utilizes a piston arrangement adapted for operation on a high-power drive axle, ensuring even distribution of clamping force across the pad surface. This configuration promotes stable friction, reduces local overheating of the friction material, and supports consistent braking efficiency during dynamic driving.

The caliper housing is designed for rigidity and resistance to thermal deformation, which is significant during intensive use. Properly routed brake fluid channels and precisely selected piston diameters help maintain consistent operating pressure throughout the entire rear circuit.

Benefits of using an original BMW caliper

Using an original caliper in BMW sports models provides a range of practical service and operational benefits:

• Factory fitment – maintaining the original mounting geometry and compatibility with other brake system components.
• Consistent braking characteristics – predictable brake pedal response and stable distribution of braking force between the axles.
• Optimal compatibility with electronic systems – construction prepared for operation with factory stability control and traction control systems.
• Reasonable cost-to-effect ratio – a used OEM component allows for restoring brake system efficiency without the need to invest in new parts.

Condition and service application

As a used item, the brake caliper is a solution intended primarily for maintenance and restoration repairs in BMW F10 M5 and F12 M6 vehicles. It is suitable for situations where it is necessary to replace a damaged or excessively worn caliper while maintaining the original manufacturer's specifications.

Before installation, a standard service procedure is recommended, including checking the condition of the guides and seals, as well as bleeding the system after installation to fully utilize the component's potential and ensure even operation of the entire rear circuit.

Selection support and technical knowledge

Selecting used brake system components requires consideration of the specific model, engine version, and axle configuration. To streamline the verification and installation process, it is worth using the practical tips included in the article: Second-hand brake system: how to safely select discs, calipers, and ABS?. There, you will find a checklist helpful for assessing the condition and compatibility of components.

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