BMW 1 Series E81 E87 Rear Right O/S Brake Caliper 40/10 6776378

BMW 1 Series E81 E87 Rear Right O/S Brake Caliper 40/10 is an original BMW braking system component designed for installation on the rear right axle of the vehicle. This used brake caliper from this series is a solution for drivers who want to maintain factory braking characteristics by using parts with a proven design and precise fit. Thanks to its correct positioning on the vehicle and adherence to manufacturer specifications, this component allows for stable operation of the braking system and predictable vehicle behavior during braking.

Specifications and technical data

• SKU: 6776378
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6776378
• Substitutable numbers: 34216776378, 6776378, 34216776379, 6776379, 34216768192, 6768192, 34216768193, 6768193
• Location on the vehicle: Rear, Right
• Category: Calipers & Brackets

Purpose and vehicle positioning

The presented caliper is designed to work on the rear right side of BMW E81 and E87 series vehicles. Proper positioning on the vehicle ensures correct guidance of the brake pad relative to the disc, which translates into even wear of friction elements and stable, repeatable braking parameters. The design of the caliper is adapted to the suspension and hub geometry in these models, which facilitates installation and allows for maintaining factory braking system settings.

Technical characteristics and compatibility

The caliper belongs to the Brake calipers and carriers category, which means it is a component responsible for generating clamping force of the pads against the disc and stable guidance of the entire brake assembly. The 40/10 designation refers to a specific design version used in selected BMW E81 and E87 configurations, which makes it easier to select the part for compatibility with the existing system.

As an OEM group part, the caliper has been designed to maintain factory operating parameters, such as:

• appropriate force and evenness of pad clamping,
• stability of pad guidance in the caliper,
• proper cooperation with the rear brake disc,
• compliance with the vehicle's factory hydraulic system.

Benefits of using an original BMW caliper

Using an original caliper on the rear right axle in a BMW E81/E87 allows for maintaining the consistency of the entire braking system. In practice, this means:

• factory fit to the carrier, hub, and brake disc,
• predictable vehicle behavior during emergency braking and daily use,
• easier diagnostics and service in the future thanks to compliance with manufacturer documentation,
• the ability to use standard assembly procedures applied in BMW service centers.

For users who prioritize maintaining the original handling and braking characteristics, choosing such a component is a technically safe solution consistent with the vehicle's design assumptions.

Condition, origin, and service application

The offered brake caliper is a used item, sourced from a dismantled BMW vehicle. This type of part will work well both for standard replacement of a worn caliper and for repairs after mechanical damage in the rear axle area. Choosing a used OEM component allows for reducing service costs while maintaining a design consistent with the manufacturer's factory solutions.

Before installation, a standard service procedure is recommended, including inspection of working surfaces, brake lines, and bleeding the system after installation. A correctly installed caliper on the rear right side ensures stable operation of the braking system and even distribution of braking forces between the sides of the vehicle.

Braking system expansion and selection of other 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, carriers, or mounting brackets, check the available parts in the BMW Brake calipers and carriers category.

When selecting used braking system components – especially calipers, discs, and components cooperating with the ABS system – it is worth following proven verification procedures. Practical tips on assessing technical condition, compatibility, and safety can be found in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?, which serves as a useful supplement when planning repairs or upgrades to the braking system in a BMW E81/E87.