BMW X3 F25 X4 F26 B+ Terminal Point Luggage Compartment For Earth Cable 9318771

BMW X3 F25 X4 F26 B+ Terminal Point Luggage Compartment For Earth Cable is an original electrical system component designed for the rear section of the vehicle. It is responsible for a secure, stable connection of the ground cable in the luggage compartment area, which is crucial for the proper operation of the starting and power supply systems. Thanks to the factory BMW design, this component ensures seamless integration with the electrical harness and proper current routing in demanding operating environments.

Specifications and technical data

• SKU: 9318771
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9318771
• Substitutable numbers: 9318771, 61139318771
• Location on the vehicle: Rear
• Category: Other Interior Parts & Accessories

Purpose and function in the vehicle

The presented ground terminal is designed specifically for BMW X3 F25 and BMW X4 F26 models, where it is mounted in the rear part of the body. Its task is to provide a low-resistance connection between the ground cable and the chassis, which stabilizes the operation of the electrical system, comfort systems, and safety systems. Its location in the luggage compartment allows for optimal cable routing and minimizes voltage drops.

Construction and performance parameters

The BMW X3 F25 X4 F26 B+ Terminal Point Luggage Compartment For Earth Cable is an OEM BMW construction element, adapted to the body geometry and factory mounting points. The design includes:

• appropriate contact cross-section for carrying high starting currents,
• stable mounting to the body structure,
• protection against loosening of the connection during operation.

Such a solution reduces the risk of connector overheating, voltage drops, and interference in the operation of sensitive electronic receivers.

Benefits of using the original terminal

Using the factory ground terminal in the BMW X3 F25 and X4 F26 translates into a number of practical benefits:

• Full compatibility with the electrical system – perfect fit for the original harness and mounting points.
• Reduction of starting and battery charging problems resulting from an insecure ground connection.
• Stable operation of electronic systems, including comfort modules and body controllers.
• Easier diagnostics – maintaining the factory installation architecture facilitates service work.

For users who are upgrading or restoring the installation in the rear of the vehicle, choosing the original terminal is a safe and technically sound solution.

Installation and service application

The component is intended for installation in the rear zone of the vehicle, at the factory ground point location. In practice, this means:

• the ability to use existing holes and mounting points,
• no need for electrical harness modifications,
• maintaining the original cable routing in the luggage compartment.

This approach is particularly important for post-accident repairs, replacing corroded ground connections, or dealing with unstable voltage in the system. Using an OEM component allows for economical repair while maintaining factory design solutions.

Expanding the BMW electrical system

If you are planning a comprehensive repair or upgrade of the electrical system area in the rear of your BMW and need other components from the same group, such as additional ground points, cable connectors, or harness brackets, check out the available parts in the Other BMW category.

Technical support and knowledge about sports systems

For those interested in comparing technical solutions used in various brands, including advanced sports constructions, an article describing the differences in the design of the drivetrain, brakes, and chassis may be helpful. More information can be found in the blog post Audi RS vs other models – what is hidden under the hood and chassis?, which allows for a better understanding of the requirements placed on installation components in high-performance vehicles.