Mercedes V251 Positive Battery Cable Wiring Loom Harness A2515401730

Mercedes V251 Positive Battery Cable Wiring Loom Harness is an original electrical system component designed for Mercedes vehicles, responsible for the stable and safe delivery of power from the battery to the vehicle's electrical system. This used wiring harness with a positive terminal is a solution for users looking for a proven component with factory geometry and fitment, allowing for professional power system repair without interfering with the installation design.

Specifications and technical data

• SKU: A2515401730
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2515401730
• Substitutable numbers: A2515401730, A 251 540 17 30
• Part type: Postive Battery Cable
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The described wiring harness with a positive terminal plays a key role in the vehicle's power supply area, connecting the positive battery terminal to the rest of the electrical system. It is responsible for:

• reliable transfer of starting current to the starter motor and main electrical consumers,
• stable power supply to control modules and electrical equipment,
• minimizing voltage drops thanks to properly selected wire cross-sections and factory connectors.

By maintaining the original design, the harness allows for installation at the manufacturer's designated mounting points, which reduces the risk of insulation abrasion and unwanted mechanical stress.

Construction and technical advantages

The item belongs to the Wires, harnesses, and connectors group, meaning it was designed as an integral part of the vehicle's electrical system. The construction includes wires with properly selected insulation and a positive terminal adapted for operation in the battery compartment, where variable temperature conditions and increased humidity occur.

The most important technical advantages include:

• factory terminations and connectors that ensure reliable electrical contact,
• geometry adapted to the specific vehicle platform, facilitating wire routing,
• preservation of original mounting points, which improves operational safety.

An element configured in this way allows for maintaining system performance parameters close to factory standards, without the need for modifications or soldering additional wire sections.

Product condition and service application

The wiring harness with a positive terminal is offered as a used part, which is a cost-effective solution while maintaining the original quality characteristic of the Mercedes brand. This type of component is suitable both for the typical replacement of a worn or damaged power cable and for comprehensive system repair after battery failure or mechanical damage within the battery compartment.

In service practice, using an original harness allows you to:

• reduce installation time thanks to plug-and-play fitment,
• maintain compliance with factory service documentation,
• minimize the risk of starting and onboard electronics power supply issues.

Selection and compatibility within the Mercedes brand

Before purchasing, it is recommended to compare the parameters of the offered harness with the documentation of the specific vehicle to confirm full compatibility with the given body version and installation configuration. Original manufacturer markings and available replacement numbers facilitate unambiguous identification of the part in service catalogs and selection systems.

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 power cables, engine bay harnesses, or battery connectors, check the available parts in the Mercedes Wires, harnesses, and connectors category.

Technical support and knowledge about used parts

When selecting used electrical system components, it is worth paying attention to the condition of the insulation, the cleanliness of contact surfaces, and the absence of signs of overheating. It is also good practice to perform periodic checks after installation, especially after the first starting and battery charging cycles.

If you are interested in a broader context of using aftermarket components and want to better understand the differences between serial parts and more specialized solutions, the guide article Stock vs. sports suspension – differences in construction and is it worth buying used suspension parts?, which discusses the practical aspects of selecting used components for a car, may be helpful.