Description
The BMW 1 Series E81 / E87 / E87N Battery Positive Auxiliary Cable is an original electrical system component designed for precise power delivery in the starting and charging system. Thanks to its factory fitment for the 1 Series models, it ensures a stable polarity connection and proper cooperation with other system components. This is a practical solution for users who want to restore power system efficiency without altering the vehicle’s structure.
Specifications and technical data
- SKU: 9130879-2
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 9130879
- Substitutable numbers: 61129217017, 9217017, 61126929707, 6929707, 61129130879, 9130879, 61126988975, 6988975, EM
- Category: Ignition Wires & Coil Boots
Purpose and Function in BMW Systems
The offered cable is designed as an auxiliary battery positive cable for BMW 1 Series models of the E81, E87, and E87N generations. Its purpose is to reliably transfer the positive terminal from the battery to selected consumers and starting components, while maintaining the parameters specified by the vehicle manufacturer.
This component operates in the high current range of starting, making it crucial to maintain the correct conductor cross-section, insulation quality, and proper termination geometry. Using an original cable helps avoid voltage drops, connector overheating, and engine starting problems.
Construction and Technical Fitment
The cable belongs to the category of Ignition Wires and Coil Connectors, but in this case, it serves as an auxiliary power cable in the battery system. Its construction includes a conductor with an appropriately selected diameter, insulation adapted for engine bay operation, and terminals that allow for secure mounting to BMW connection points.
The factory-shaped cable routing facilitates its placement within the 1 Series body, minimizing the risk of abrasion, mechanical stress, and contact with high-temperature components. This ensures an organized installation and that the cable maintains its correct working position throughout its service life.
Benefits of Using an Original BMW Cable
Using the original auxiliary positive cable in the BMW 1 Series E81 / E87 / E87N offers a range of practical benefits:
- maintaining the factory electrical characteristics of the power system,
- reducing the risk of failures related to incorrect voltage or connection drops,
- secure fitment to mounting points in the body and engine bay,
- no need for system modifications or additional adapters.
For users who value the integrity of the electrical system, it is important that the cable comes from the BMW line, which promotes compatibility with other system components.
Item Condition and Service Application
The cable is in used condition, making it an attractive service solution for daily driven vehicles where functionality and compliance with original specifications are important. This type of component is suitable for repairs after mechanical or thermal damage, as well as for replacing worn sections of the power supply system.
Before installation, a standard inspection of the connectors, insulation, and mounting points in the vehicle is recommended to ensure proper cable routing and safe operation of the entire system.
Related Items and Further Information
If you are planning a comprehensive service of the high-voltage system in your BMW and need other components from the brand’s ignition wires and connectors category, check the available parts in the BMW Ignition Wires and Coil Connectors category.
For users who want to better plan their purchases and assemble a wider set of service parts in one place, a guide describing the strategy for selecting used original parts may be useful – more information can be found in the article Comprehensive Sourcing of Used Car Parts.
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