Mercedes ML W164 Door Wiring Harness Front Left Right N/O/S Loom A2514401409

The Front Door Wiring Harness for Mercedes ML W164 Left/Right is an original electrical installation component designed for professional repair or replacement of factory wiring in the doors. This product, from the Wires, Harnesses, and Connectors category, ensures proper signal and power routing to components located in the front doors, maintaining compatibility with the vehicle's factory electrical architecture. As such, it provides a solid foundation for restoring full functionality to door equipment after a collision, flood, or electrical system interference.

Specifications and technical data

• SKU: A2514401409
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2514401409
• Substitutable numbers: A2514401409, A 251 440 14 09
• Location on the vehicle: Front, Left, Right
• Category: Wiring Harnesses, Cables & Connectors

Application and Function in the Electrical System

The presented front door wiring harness for Mercedes ML W164 is responsible for connecting the electrical modules and receivers located in the doors to the main body electrical system. A correctly selected and complete door harness is crucial for the stable operation of elements such as window controls, central locking, mirrors, or door lighting, depending on the specific vehicle configuration.

Its placement on the vehicle covers the front left and right sides, allowing this harness to be used in repairs of the driver's or front passenger's door wiring, in accordance with the requirements of the specific ML W164 body version.

Construction and Fit for Mercedes ML W164

As a component from the Wires, Harnesses, and Connectors group, this harness has been designed for proper wire routing within the door and pillar structure, taking into account factory mounting points. The appropriate lengths of sections, connector placement, and their types are adapted to the specifications of the ML W164 model, facilitating installation and minimizing the risk of wire strain during door operation.

Original connectors and wire routing limit the risk of installation errors, accidental short circuits, or open circuits, which often occur with unprofessional electrical system repairs. This makes the harness suitable for both replacing a damaged section and restoring the factory condition after previous modifications.

Condition, Origin, and Benefits of Using a Used Part

This harness is a used part, sourced from dismantling, which allows for original fitment to be combined with an attractive price compared to new wiring. For the electrical system, this means maintaining the factory geometry of wires and connectors, without the need for modifications or custom adapters.

Using an original, used door harness is particularly beneficial for post-accident repairs, where compliance with service documentation and seamless connection to existing control modules are important. This is a technically safer solution than universal wire sets, which require cutting, soldering, and additional connection protection.

If you are interested in a broader context of using dismantled parts and want to learn about the main advantages of such solutions – savings, maintaining OEM quality, and the ecological aspect – it is worth reading the article: Used Parts – Benefits and Practical Tips for Choosing.

Why Choose This Door Harness for ML W164

Selecting the correct door harness directly impacts the reliability of the comfort and safety systems in the Mercedes ML W164. Using original wiring allows you to:

• maintain correct wire routing paths in the door and pillar,
• avoid problems with ill-fitting connectors or incorrect wire lengths,
• minimize the risk of malfunctions resulting from unprofessional system modifications,
• maintain compliance with the vehicle's factory electrical schematics.

For workshops and individual users, this means faster installation, fewer potential points of failure, and easier diagnostics in the future. This is particularly important in vehicles equipped with advanced comfort systems, where any irregularity in the harness can generate hard-to-locate errors.

Related Wires, Harnesses, and Connectors for Mercedes

If, during the repair of the doors in your ML W164, you also plan to replace other parts of the body's electrical system, connectors, or additional wiring sections, check the available parts in the category Mercedes Wires, Harnesses, and Connectors.