BMW 1 3 Series E81 E87 E90 E91 E92 Battery Cover Base B Plus 8387581

BMW 1 3 Series E81 E87 E90 E91 E92 Battery Cover Base B Plus is an original electrical system component designed for selected BMW 1 and 3 Series models. It ensures a stable and secure mounting of the positive cable at the battery and protects critical connections from mechanical damage. Thanks to its factory OEM design, the part maintains the correct mounting geometry and fits perfectly into the battery compartment.

Specifications and technical data

• SKU: 8387581
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8387581
• Substitutable numbers: 61138387581, 8387581
• Category: Other Interior Parts & Accessories

Purpose and function of the component

The presented battery positive terminal cover base has been designed specifically for selected versions of the BMW 1 Series E81/E87 and 3 Series E90/E91/E92. Its task is to keep the positive cable in a stable position, reduce vibrations, and protect connections from accidental contact with other body components. This type of component is essential for the safety of the power supply system, as well as for the long-term, reliable operation of the electrical installation.

Construction and fitment for BMW

As a part from the BMW line, the positive terminal cover base is manufactured according to the manufacturer's factory standards. Properly shaped mounts allow for precise seating in the designated body points, which facilitates installation and reduces the risk of stress on the wiring harness. The design provides for the orderly routing of the positive cable, which promotes clarity in the battery compartment and facilitates subsequent service work.

Part condition and service application

The item is offered as a used part, which allows for an economical repair or replacement of a missing component in the vehicle. This type of cover base will prove useful both when replacing a damaged element after a collision or mechanical intervention, and when completing the installation after modifications in the battery area. Using an original component helps maintain the structural integrity of the vehicle and preserve the factory routing of the cables.

Benefits of using the original cover base

Using a dedicated positive terminal cover base in the BMW 1 and 3 Series brings a number of practical benefits:

• orderly routing of the positive cable in the battery compartment,
• increased protection of connections against accidental short circuits and mechanical damage,
• easier diagnostics and service maintenance of the electrical system,
• preservation of the factory mounting layout and compatibility with other body components.

Thanks to this, the part constitutes a practical service solution for users who want to restore the correct battery housing without using makeshift mounts.

Expansion of upgrades within the installation

If you are planning a comprehensive repair or upgrade of the power supply zone and battery compartment in your BMW and need other elements from the same group, such as additional cable holders, terminal covers, or harness brackets, check the available parts in the Other BMW category.

Technical knowledge and part selection

When working with the electrical system, it is worth knowing the structural differences between individual model lines and high-performance versions. To compare solutions used in sports variants and standard vehicle versions, you can read an article describing the construction of engines, brakes, and chassis in high-performance cars: Audi RS vs other models – what is hidden under the hood and chassis?.