Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W177 W247 Positive Battery Cable Lead Wire Starter is an original electrical system component, designed for a reliable connection between the positive battery terminal and the vehicle's electrical installation. Its robust construction and precise fitment for the specific requirements of the W177 and W247 model families ensure stable power supply to onboard systems and minimize voltage drops. Thanks to its factory origin from the Mercedes brand, the part maintains proper conductivity parameters and compatibility with the factory wiring harness.

Specifications and technical data

• SKU: A1775407932-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1775407932
• Substitutable numbers: A1775407932, A 177 540 79 32
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The presented positive battery cable is responsible for a secure, mechanically stable, and electrically efficient connection between the battery and the vehicle's main electrical system. In Mercedes W177 and W247 series vehicles, a correctly selected positive cable is crucial for:

• trouble-free engine starting under various electrical loads,
• stable power supply for control units, comfort modules, and safety systems,
• reducing the risk of connection overheating and local voltage drops.

Due to its design in accordance with Mercedes factory standards, the correct conductor diameter, appropriate flexibility, and terminal fitment to connection points in the engine bay are maintained.

Construction and functional advantages

The item belongs to the Cables, harnesses, and connectors group, which means it was designed as an integral part of the vehicle's power distribution system. In practice, this translates into:

• factory-shaped cable routing, facilitating correct installation in the engine bay,
• the use of terminals and connectors matched to original ground and power points,
• maintaining adequate resistance to vibrations, temperature changes, and typical operational loads.

The used condition of the part allows for an economical replacement while maintaining original manufacturing quality, which is particularly beneficial for electrical system repairs following battery failure or mechanical damage to the cable.

Selection and technical compatibility

To correctly select the positive battery cable for a specific Mercedes vehicle, it is worth paying attention to compatibility with the given body generation and electrical system configuration. Original manufacturer markings and available interchangeable numbers allow for precise identification of the part in service catalogs and selection systems.

This approach minimizes the risk of installing a component with the wrong length, a different type of terminal, or a different mounting method, which could lead to cable tension, incorrect positioning in the engine bay, or service access issues.

Condition, installation, and service application

The item in used condition is a suitable choice for repairs where maintaining the original cable routing geometry and compatibility with factory brackets and covers is crucial. In practice, the installation involves:

• disconnecting the vehicle's power supply in accordance with service procedures,
• removing the old cable along with the positive terminal,
• securing the cable in the original routing points and tightening the bolted connections to the correct torque.

A correctly installed positive cable reduces the risk of terminal sparking, local overheating, and unwanted power interruptions, which is significant for the longevity of the battery and the vehicle's electronics.

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

For drivers who are simultaneously servicing the braking system and considering the purchase of used components, a guide describing the safe selection of elements such as discs, calipers, or ABS modules may be helpful – detailed tips can be found in the article Second-hand braking system: how to safely select discs, calipers, and ABS?.