Mercedes W212 Diesel Engine Fuel Tank Pump Sender Unit A2124700594

The Mercedes W212 Diesel Fuel Pump Float is a component from the Fuel Pumps and Level Sensors category, designed for diesel engine fuel systems. It enables precise reading of the diesel fuel level in the tank, ensuring stable operation of the fuel gauge and predictable performance of the fuel supply system. This is a practical solution for users who want to service the fuel system in their Mercedes E-Class W212 in a controlled manner.

Specifications and technical data

• SKU: A2124700594
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2124700594
• Substitutable numbers: A2124700594, A 212 470 05 94
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and Function in the Fuel System

The fuel pump float in a Mercedes W212 diesel engine is responsible for the accurate measurement of fuel level and transmitting this information to the instrument cluster. It works in conjunction with the fuel pump module, ensuring stable operating conditions for the fuel system and providing the driver with a reliable indication of the amount of diesel fuel in the tank.

This component is particularly important in vehicles used for long-distance driving, where the repeatability of fuel level readings directly impacts refueling planning and driving safety. A properly functioning float reduces the risk of the engine suddenly stalling due to incorrect readings.

Benefits of Using an Original Mercedes Part

The presented float comes from the Mercedes brand, which means it retains the factory geometry, electrical characteristics, and compatibility with the vehicle's electrical system. As a result:

• compliance with the fuel system parameters intended for the W212 diesel engine is maintained,
• the risk of dashboard errors related to incorrect fuel level readings is reduced,
• installation is performed similarly to the factory standard, without the need for system modifications.

Choosing an original component from this group helps maintain the cohesion of the entire fuel supply system, which is especially important in modern diesel engines that are sensitive to the quality and stability of the supplied fuel.

Technical Characteristics and Compatibility

The float is designed for diesel fuel systems, meaning it is adapted to the physicochemical properties of diesel fuel. The component's construction is prepared for operation within the fuel tank environment, taking into account variable temperatures and typical operating conditions of mid-range executive cars.

Before purchasing, it is advisable to verify the part's compatibility with the specific vehicle trim level and year of manufacture, using the OEM number or catalog data. This approach minimizes the risk of selecting an incorrect variant and facilitates subsequent installation at a service center or independent workshop.

Condition, Service Application, and Installation

The offered fuel pump float is a used part, making it a sensible choice for maintenance repairs where an optimal cost-to-functionality ratio is a priority. This type of part is suitable for both replacing a damaged fuel level sensor and for comprehensive servicing of the in-tank pump module.

Due to the specific nature of its operation within the fuel tank, it is recommended to entrust the installation to a workshop experienced with diesel fuel systems in Mercedes vehicles. Proper seating of the float and the sealing of the entire module directly impact the safety and durability of the system.

Assistance with Selection and Additional Information

If you are planning comprehensive servicing of the fuel system in your Mercedes E-Class and also need other components from the Fuel Pumps and Level Sensors group dedicated to this brand, check the available parts in the Mercedes Fuel Pumps and Level Sensors category.

If you have doubts regarding component selection for a specific car configuration, how to verify compatibility using the OEM number, or how to interpret markings on the module housing, a guide dedicated to used electronic and measurement components in cars may be helpful – a detailed discussion can be found in the article Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?.