BMW i4 G26 High Voltage Battery Cable Wiring Harness Loom 5A2DB59

BMW i4 G26 High Voltage Battery Cable Wiring Harness Loom is a specialized high-voltage wiring harness designed for the traction battery system in the BMW i4 G26 model. This item belongs to the Cables, wiring harnesses, and connectors category and is a key component ensuring a safe and stable connection between high-voltage modules in the BMW electric vehicle. Thanks to its OEM factory design, the harness maintains proper cable routing, insulation, and compatibility with the original vehicle architecture.

Specifications and technical data

• SKU: 5A2DB59
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A2DB59
• Substitutable numbers: 5A2DB598, 61125A2DB59
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the high-voltage system

The presented high-voltage harness is designed to operate within the traction battery area of the BMW i4 G26, where it is responsible for power transmission between individual HV system components. The design of the cables and connectors is tailored to the requirements of BMW electric vehicles, which allows for maintaining the appropriate level of electrical safety and proper communication between modules.

The original harness architecture enables:

• maintaining proper cable routing in body tunnels and channels,
• maintaining appropriate clearances from body and chassis components,
• correct positioning of high-voltage connectors relative to the battery and other sub-assemblies.

Construction, connectors, and compatibility

The harness belongs to the Cables, wiring harnesses, and connectors category, meaning it includes both power cables and dedicated connectors matched to the factory sockets in the BMW i4 G26. The terminals and sockets used are prepared for operation with high-voltage installations, and their geometry is consistent with the factory sockets in the vehicle, which facilitates installation and minimizes the risk of incorrect connection.

By maintaining the original harness geometry, it is possible to achieve:

• seamless fitment to factory brackets and mounts,
• reduction of mechanical stress on the cables during vehicle operation,
• maintenance of proper insulation protection at critical points of the installation.

Condition, service application, and benefits of installation

This item is removed from a vehicle and is intended for service applications in BMW i4 G26 vehicles where replacement of a damaged or degraded high-voltage harness is necessary. Choosing an original harness from the same model series allows for maintaining consistency with factory service documentation and manufacturer procedures, which is particularly important in the case of HV systems.

The main advantages of using this harness include:

• maintaining factory compatibility with the BMW i4 G26 electrical system,
• the ability to restore the original routing of high-voltage cables,
• reducing the risk of installation errors compared to non-factory solutions.

During installation, it is recommended to follow BMW service procedures and ensure that work is performed only by personnel trained in handling high-voltage systems, which ensures the appropriate level of safety and durability of the repair.

Support with selection and alternative service solutions

In the case of BMW electric vehicles, it is particularly important to match the harness to the specific vehicle configuration; therefore, before purchasing, it is worth verifying compatibility with your specific unit based on vehicle data and manufacturer specifications. If new high-voltage installation components are unavailable in the authorized service network, components removed from vehicles of the same generation can be a good supplement to the repair strategy.

To better plan the repair of an older or heavily used vehicle, it is worth checking the guide on using used parts – more information can be found in the article on repairing older models using salvaged parts.

Expansion of installation within BMW cables and wiring harnesses

If you are planning a comprehensive repair or upgrade of the electrical system area in your BMW and need other elements from the same group, such as additional harnesses, signal cables, or service connectors, check the available parts in the BMW cables, wiring harnesses, and connectors category.