Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105401930

Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness is an original electrical system component designed to power key vehicle consumers. Thanks to its factory geometry and appropriately selected wire cross-sections, the harness ensures stable current flow and proper fitment to factory mounting points. This is a practical solution for users who want to maintain consistency with the original installation in their Mercedes.

Specifications and technical data

• SKU: A2105401930
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2105401930
• Substitutable numbers: A2105401930, A 210 540 19 30, BG
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the electrical system

The presented positive cable harness has been designed as a power supply component in the Mercedes E-Class W210 generation. It is responsible for safely delivering positive voltage to selected components, while maintaining proper insulation and resistance to typical operational loads in the engine bay and bodywork.

Thanks to its factory origin, the harness integrates with the vehicle's existing electrical system, which facilitates diagnostics, service, and any potential future modifications. Properly routed branches and connectors minimize the risk of incorrect installation and limit the possibility of voltage drops.

Construction and fitment for Mercedes E-Class W210

The harness belongs to the Wires, harnesses and connectors group, which means it has been constructed to operate in an environment exposed to vibrations, temperature changes, and contact with other mechanical components. Factory wire terminations and appropriately selected segment lengths facilitate routing the installation along original mounting paths.

The appropriate flexibility of the wires and the use of proper insulation help maintain the correct bending radius, which is important when installing in the tight spaces typical of the Mercedes E-Class W210 engine bay. This reduces the risk of abrasion and mechanical damage during long-term operation.

Benefits of using an original Mercedes harness

Using an original positive cable harness in a Mercedes allows for maintaining electrical parameter consistency with the manufacturer's specifications. This is particularly important in vehicles equipped with extensive electronics, where power stability affects the proper operation of controllers, comfort modules, and other consumers.

Choosing a component from the Wires, harnesses and connectors group from the same brand reduces the need for modifications, soldering, or the use of additional adapters. This is a beneficial solution for both workshops and individual users who expect predictable installation and easier diagnostics of potential future faults.

Condition, service application and economic aspect

The item comes from a used vehicle, which makes it an attractive alternative to new components, especially in the case of older premium car generations. Such components are frequently chosen for repairing installations after mechanical damage, wire corrosion, or incorrect previous electrical modifications.

The positive cable harness will work well both for point repairs of a specific circuit and for broader reconstruction of a section of the installation in a Mercedes E-Class W210, when the goal is to restore the factory wire routing and correct electrical connections.

System expansion and selection of related components

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

For users interested in the broader context of using used components in premium cars, an article describing current market trends may be useful – more information can be found in the material Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026.