Mercedes C118 W177 W247 M282 Battery 48V Wiring Harness Cable Loom A1775408027

Mercedes C118 W177 W247 M282 Battery 48V Wiring Harness Cable Loom is a specialized electrical system component designed for gasoline-powered vehicles equipped with a 48V system. This original harness from the Cables, harnesses and connectors group ensures a proper connection between the 48V battery and other power supply and energy management components. It is a solution dedicated to modern Mercedes models, where the stability and safety of the high-current installation are of key importance.

Specifications and technical data

• SKU: A1775408027
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1775408027
• Substitutable numbers: A1775408027, A 177 540 80 27
• Fuel type: Petrol
• Part type: Wire Harness
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The described 48V battery wiring harness is responsible for transmitting electrical energy between the battery and other components of the power supply system in gasoline-powered vehicles. In cars with a 48V system, it plays a particularly important role in:

• safely routing high-current cables in the engine compartment and within the vehicle body,
• ensuring a stable power supply for drive-assist systems and comfort features,
• maintaining correct electrical parameters throughout the entire 48V battery power circuit.

Thanks to its factory-fit design for the specific architecture of Mercedes C118, W177, and W247 series vehicles with the M282 unit, the harness allows for maintaining the original cable routing and proper connector placement.

Construction and technical advantages

The harness belongs to the Cables, harnesses and connectors group, which means it has been designed as a complete solution including cables and factory-fitted terminations. The construction intended for 48V systems in gasoline vehicles takes into account:

• appropriate cable cross-section adapted to the current loads of the 48V system,
• factory connectors and terminals enabling secure, stable electrical connections,
• harness routing that limits the risk of abrasion, overheating, and interference.

Such a solution helps maintain the proper operating parameters of the power supply system while facilitating diagnostics and potential servicing of the electrical installation.

Benefits of using an original Mercedes harness

Using an original 48V battery wiring harness in Mercedes vehicles with a gasoline engine provides a number of practical benefits:

• Full compatibility with the electrical architecture – the harness is matched to the specific platform and powertrain, which minimizes the risk of installation errors.
• Stable 48V system operating parameters – the proper selection of cables and connectors supports the reliability of the power supply system and auxiliary units.
• Simplified service installation – factory lengths, routing, and cable terminations reduce replacement time and limit the need for installation modifications.

For workshops specializing in the Mercedes brand and users who care about compliance with factory specifications, choosing such a harness is a technically safe and predictable solution in operation.

Application in 48V gasoline vehicles

In vehicles with a gasoline engine and a 48V system, the battery wiring harness is responsible for the proper power supply of mild-hybrid system components and other consumers requiring stable voltage. A correctly selected and installed component:

• limits voltage drops in high-current circuits,
• supports the proper cooperation of the 48V battery with the control electronics,
• reduces the risk of failures resulting from overheating or unstable connections.

As a result, the power supply system in modern Mercedes models maintains parameters close to factory standards, which translates into predictable operation of drive-assist systems and driving comfort.

Product condition and service application

The offered harness is a used component, which makes it an attractive service solution for vehicles after accident repairs, upgrades, or replacements of damaged installation sections. Choosing an original, used harness allows you to maintain compliance with the vehicle's factory design while optimizing repair costs.

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 compartment harnesses, or installation connectors, check the available parts in the Mercedes Cables, harnesses and connectors category.

Additional technical support

In the case of accident repairs, especially when installation elements within the body or engine compartment have been damaged, it is worth familiarizing yourself with practical tips regarding the selection and installation of dismantled parts. Helpful information can be found in the article Bodywork and chassis – accident repairs using dismantled parts, which discusses, among other things, the principles of safe use of original used components.