Genuine OEM Volkswagen Battery Earthline, part number 5Q0971250AH. This heavy-duty electrical cable serves as the primary ground connection for the vehicle's battery, establishing a crucial return path for electrical current throughout the vehicle's electrical system. It connects directly to the battery terminal and typically grounds to the vehicle chassis or engine block. Weighing 0.165 kg and measuring approximately 50.5 cm in length, this cable is designed for high current flow. Choosing genuine OEM ensures the correct gauge wire, insulation quality, and terminal connections for optimal conductivity, corrosion resistance, and reliable electrical performance, preventing starting issues and electrical malfunctions.