Fuel Pump Mercedes W204 W212 M271 Delivery Unit Sensor Right O/S A2044700294

Mercedes W204 W212 M271 Fuel Pump Sender A2044700294 is an original part from the Fuel Pumps and Level Sensors group, designed for M271 series gasoline engines in Mercedes C-Class W204 and E-Class W212 models. The integration of the fuel pump function with the fuel level sender ensures consistent operation of the fuel supply system and precise reading of the gasoline amount in the tank.

Specifications and technical data

• SKU: A2044700294
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2044700294
• Substitutable numbers: A2044700294, A 204 470 02 94
• Location on the vehicle: Right
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and Function in the Fuel System

The presented fuel pump with sender has been designed to operate in the gasoline fuel supply system of M271 engines, where it is responsible for stable fuel delivery under the correct pressure and for measuring the fuel level in the tank. Its placement on the right side of the vehicle is consistent with the factory design of the fuel tank in these models, which facilitates installation and maintains the original system geometry.

Thanks to the combination of pump and level sensor functions in a single unit, the fuel system maintains consistent operation, and the engine control unit receives reliable data on the amount of gasoline. This translates to correct operation of the fuel gauge on the instrument cluster and stable supply characteristics, which are particularly important during dynamic driving and with low fuel levels.

Construction of the Fuel Pump with Sender Assembly

The fuel pump integrated with the sender forms a complete module mounted in the tank, comprising the hydraulic part responsible for pumping gasoline and the fuel level measurement mechanism. The design used is consistent with Mercedes factory solutions, ensuring proper routing of fuel lines, correct positioning of the sender, and compatibility with the vehicle's electrical system.

This solution minimizes the risk of installation errors and reduces the possibility of leaks within the pump housing. For the user, this means stable operation of the fuel supply system, predictable fuel level indications, and maintenance of factory-like parameters.

Benefits of Using an Original Mercedes Part

Using an original fuel pump with sender module in Mercedes W204 and W212 with M271 engines allows for compliance with the vehicle's factory specifications. This is particularly important in modern fuel systems, where the operating parameters of the pump and the characteristics of the fuel level sensor are linked to the engine control unit's software.

• consistent cooperation with the vehicle's electronics and fuel level indicator,
• proper fit to the tank geometry and fuel lines,
• maintenance of factory gasoline supply characteristics across the entire engine operating range.

A used original part is a good choice where technical compatibility with the vehicle and the possibility of an economical fuel system repair while maintaining high quality of workmanship are important.

Selection by Numbers and Placement

The fuel pump with sender module should be selected considering the OEM part number and interchangeable numbers, as well as its placement on the vehicle. For this reference, installation on the right side is intended, which is important for the correct positioning of the pump housing in the tank and the sender's operation across the full fuel level range.

To deepen your knowledge of fuel system diagnostics and operation, it is worth reading the article describing the operation of pumps, injectors, and fuel tanks – a detailed discussion can be found in the material Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair.

Expansion and Service of the Mercedes Fuel System

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

This approach allows for a consistent fuel system service – simultaneously addressing gasoline supply, correct fuel level reading, and the durability of the entire assembly working in the tank.