Rear Brake Caliper BMW G30 G31 M Sport 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 G30 G31 M Sport Left N/S Brake Housing Carrier is an original braking system component from the Brake Calipers and Carriers group, designed for installation on the rear left axle. This used M Sport line caliper allows you to maintain factory braking characteristics, ensuring consistency with other system components. It is a solution for drivers who want to maintain proper brake performance while keeping service costs reasonable.

Specifications and technical data

• SKU: 6891915
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6891915
• Substitutable numbers: 6891915, 34206891915
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and fitment for BMW G30 / G31

The presented caliper is designed for the rear left side of BMW 5 Series G30 and G31 models equipped with the M Sport package. The OEM design guarantees proper positioning relative to the disc, correct interaction with brake pads, and compatibility with the factory hydraulic system. This ensures that braking force parameters and vehicle stability are maintained during intensive braking.

Construction and technical characteristics

The caliper belongs to the group of components responsible for converting hydraulic pressure into the clamping force of the pads against the disc. The housing is designed for effective heat dissipation and even pressure distribution across the friction surface. This solution reduces the risk of uneven pad wear and improves the consistency of braking performance.

The geometry of the caliper is adapted to the specific requirements of the M Sport version, which translates into stable pad guidance in the carrier and precise piston operation. Appropriately selected hydraulic channel cross-sections promote rapid pressure build-up, which improves the system's response to brake pedal input.

Benefits of using an original BMW caliper

Using an original caliper in a BMW G30 / G31 offers a number of practical benefits:

• Factory fitment – maintaining the geometry intended by the vehicle manufacturer, without the need for mounting modifications.
• Consistent operation with other braking system components, including discs, pads, and the ABS/ESP system.
• Reduced risk of bleeding issues and uneven braking thanks to the proper design of hydraulic channels.
• The ability to restore original braking characteristics after repair or rear axle upgrades.

For users who expect predictable brake pedal response and vehicle stability, choosing such a component is a reasonable compromise between cost and quality.

Condition, verification, and safety of use

The item is offered as a used brake caliper, which allows for optimized service costs while maintaining the original design. Before installation, standard workshop procedures are recommended: checking for leaks, freedom of movement of pistons, guide pins, and connection threads. Proper preparation and installation by an experienced service center are crucial for safety and the uniform operation of the entire system.

If you want to deepen your knowledge about selecting aftermarket brake components and verify what to look for when purchasing, it is worth checking out our guide: Second-hand braking system: how to safely select discs, calipers, and ABS?. This is a practical supplement to information for those planning repairs on their own.

BMW braking system expansion

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 calipers, carriers, or brackets, check out the available parts in the BMW Brake Calipers and Carriers category.

This allows you to select a consistent set of components in one place, which facilitates service planning and minimizes the risk of compatibility issues between individual braking system components.