Mercedes W907 Low Pressure Pump Fuel Line Electrical Wiring Harness A9075402405

The Mercedes W907 Fuel Pump Harness is an original electrical component of the fuel system, designed for W907 series models. Thanks to its factory design, it ensures proper power supply and control of the fuel pump, which translates to stable engine operation and correct interaction with the vehicle's electronics. A used OEM component is a sensible choice for professional repair or replacement of a damaged harness in Mercedes vehicles.

Specifications and technical data

• SKU: A9075402405
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9075402405
• Substitutable numbers: A9075402405, A 907 540 24 05
• Category: Fuel Pumps & Sending Units

Purpose and Function in the Fuel System

The fuel pump harness in the Mercedes W907 is responsible for the electrical connection between the fuel pump, level sensors, and the vehicle's control electronics. A correctly selected harness:

• ensures stable power supply to the fuel pump across the entire load range,
• enables precise fuel level reading by the sensors,
• interacts with the factory engine control and safety systems,
• minimizes the risk of communication errors and installation interference.

By maintaining the original geometry of the wires and connectors, the harness is adapted to the factory mounting points in the body and fuel tank, which facilitates installation and reduces the possibility of mechanical damage during operation.

Benefits of Using an Original Mercedes Harness

Using an OEM component in the Fuel Pumps and Level Sensors category helps maintain the integrity of the entire fuel system. In practice, this means:

• factory-matched connectors for the fuel pump and level sensors,
• appropriately selected wire gauges for current loads,
• compliance with electrical parameters specified by the manufacturer,
• easier diagnostics in case of potential installation faults.

For modern Mercedes vehicles, where the fuel system is tightly integrated with control electronics, using an original harness reduces the risk of compatibility issues and incorrect fuel level readings.

Characteristics of a Used Component

The presented harness is from a dismantled vehicle and is offered as a used original part. This type of component is particularly attractive in situations where:

• a quick and economical repair of the installation near the fuel tank is necessary,
• there has been mechanical damage to the wires or connectors,
• intermittent problems with the pump power supply or fuel level indication occur.

Choosing a used OEM harness allows you to maintain factory quality and fit, while reducing costs compared to a new part from an authorized dealer.

Professional Selection by OEM and Integration with Electronics

When selecting a fuel pump harness for a Mercedes, matching by OEM part number and compatibility with the specific body version and fuel system is crucial. A correctly selected component:

• ensures proper cooperation with control modules,
• eliminates the need for installation modifications,
• facilitates plug-and-play installation in the fuel tank area.

To better understand the principles of selecting used electrical components and sensors in modern cars, it is worth consulting the Global Parts guide: Used automotive electronics on board – why choose second-hand ECUs and sensors?. The article discusses, among other things, selection by OEM numbers, compatibility issues, and practical installation tips.

Expansion and Service of the Mercedes Fuel System

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other parts from the same product group, such as power lines, pump modules, or additional level sensors, check the available parts in the Mercedes Fuel Pumps and Level Sensors category.

By using consistent components from the same product group, it is easier to maintain stable fuel system operating parameters, as well as simplify subsequent vehicle diagnostics and service. Choosing original solutions for the Mercedes W907 is an investment in predictable vehicle behavior and trouble-free long-term operation.