Mercedes W164 W251 Front Wiring Loom Harness Seat Cable Loom A1644400650

Mercedes W164 W251 Front Wiring Loom Harness Seat Cable Loom is an original electrical installation component designed for the front section of Mercedes vehicles with diesel engines. It enables proper electrical connection of the seat to the factory vehicle installation, ensuring stable power supply and communication with control modules. By maintaining the factory wiring architecture, this Mercedes W164 W251 Front Wiring Loom Harness Seat Cable Loom allows for seamless integration with the existing electrical system.

Specifications and technical data

• SKU: A1644400650
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644400650
• Substitutable numbers: A1644400650, A 164 440 06 50
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle

The offered harness belongs to the Wires, harnesses and connectors group and is designed for installation in the front interior area, in the driver or passenger seat zone, in Mercedes W164 and W251 class vehicles with diesel engines. It is responsible for transmitting signals and power between the seat and the main electrical installation, which is important for, among other things:

• powering electric seat adjustments, if provided in the given vehicle configuration,
• operating sensors and safety elements integrated with the seat,
• stable connection with control modules in the front part of the cabin.

Thanks to the preservation of the original wire geometry and factory connectors, the harness allows for installation in the mounting points provided by the manufacturer, which reduces the risk of abrasion and interference in the system's operation.

Benefits of using an original Mercedes harness

Using an original seat harness in a Mercedes W164 / W251 allows for maintaining the consistency of the entire electrical system. In practice, this means:

• reliable fit to the factory installation – connectors and wire lengths are consistent with the manufacturer's design,
• maintaining proper communication with modules responsible for comfort and safety,
• reduced risk of computer diagnostic errors resulting from improper installation modifications.

The harness is a particularly important element in vehicles with diesel engines, where the electrical system cooperates with extensive control and monitoring systems, and the stability of connections affects the proper operation of many vehicle functions.

Condition, installation and service application

The product is offered as a used part, which is a cost-effective service solution for users looking for original components at a reasonable price. This type of element is particularly useful for:

• repairs after mechanical damage or interference with the seat installation,
• swapping seats between units of the same model,
• restoring the factory electrical configuration after previous modifications.

The harness is intended for installation in the front part of the vehicle, in the seat area, using factory wire routing points. Installation by a person with experience in electrical systems in Mercedes vehicles is recommended, which allows for maintaining full functionality and safety of the system.

Application in service and parts selection

The element has a dedicated OEM part number and interchangeable numbers, which facilitates precise identification in service catalogs and parts selection systems. When planning a repair, it is worth verifying the compatibility of the harness with the specific seat equipment version and vehicle year, using technical documentation or the VIN number.

If you are planning a comprehensive repair or upgrade of the front seat area in your Mercedes and need other elements from the same group, such as additional harnesses, power cables, or seat installation connectors, check the available parts in the Mercedes Wires, harnesses and connectors category.

Support in selecting used parts

When choosing used electrical installation elements, it is worth being guided by compliance with the manufacturer's markings and the intended use for a specific model and fuel type. For those who want to better understand the specifics of the second-hand parts market and learn about the most frequently chosen solutions for popular car models, our guide will be helpful: The best used car parts – a guide to the most frequently chosen original parts.