Mercedes W167 W177 W223 Hydraulic Pump Wiring Loom Harness Cable A0005409303

Mercedes W167 W177 W223 Hydraulic Pump Wiring Loom Harness Cable is a specialized component from the Cables, harnesses and connectors group, designed for the precise connection of the electrical system to the hydraulic pump unit in selected Mercedes models. It enables stable power supply and control signal transmission, which translates into predictable system operation and reduces the risk of failures resulting from circuit breaks.

Specifications and technical data

• SKU: A0005409303
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0005409303
• Substitutable numbers: A0005409303, A 000 540 93 03
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the vehicle system

The presented harness has been designed as an element of the electrical system working with the hydraulic pump in Mercedes compact and luxury class vehicles. It is responsible for:

• transferring power to the hydraulic pump from the vehicle's main electrical system,
• ensuring proper communication with control modules,
• maintaining stable electrical parameters under variable load conditions.

Thanks to its dedicated design, the harness is matched to the factory electrical architecture, which facilitates installation and limits the need for interference with the original system.

Construction and technical features

The harness belongs to the Cables, harnesses and connectors category, which means it has been prepared for operation in environments exposed to vibrations, temperature changes, and contact with mechanical elements. Characteristic features of this type of solution include:

• appropriately selected wire cross-section ensuring safe transmission of the pump's current load,
• use of insulation adapted for operation in the engine compartment or chassis zone,
• factory connectors enabling secure, repeatable connection with the hydraulic pump and the rest of the system.

A harness configured in this way allows for maintaining the consistency of the electrical system and limits the risk of problems resulting from unprofessional modifications to the installation.

Benefits of using an original Mercedes harness

Using a dedicated hydraulic pump harness in a Mercedes vehicle brings a number of practical service and operational benefits:

• Compatibility with the factory installation – matched wire lengths and appropriate connectors facilitate installation and reduce the risk of connection errors.
• Stable operation of the hydraulic system – properly routed power supply and control signals promote smooth pump operation, which is important for driving comfort and safety.
• Professional service solution – replacing the complete harness instead of repairing individual wires allows avoiding makeshift connections and improves system reliability.

This solution is especially recommended for repairs of vehicles used intensively or in demanding conditions, where durability and repeatability of parameters count.

Component condition and use in service practice

The offered harness is a used component, which in workshop practice often constitutes a favorable compromise between the cost of repair and maintaining the original design of the installation. This type of component is frequently chosen for:

• repairs after mechanical damage to the harness (abrasions, tears, connector corrosion),
• restoring the installation after interference with the hydraulic system,
• servicing vehicles where maintaining compliance with the factory solution is important.

Replacing the complete harness with an original component allows for restoring proper wire routing and organizing the installation path in the hydraulic pump zone.

Selection support and additional information

When selecting a hydraulic pump harness for a specific vehicle, it is worth paying attention to compatibility with the body version and the hydraulic system used. In case of doubt, it is helpful to compare the configuration with the removed component and the vehicle's service documentation.

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

For drivers interested in broader diagnostics of systems in diesel-powered vehicles, an article describing the symptoms and consequences of improper injector operation may be helpful – more information can be found in the material Diesel injector failures – how to recognize them and what are the risks of neglecting them.