Fuel Pump Mercedes W166 Delivery Unit Level Sensor A1664702494

Mercedes W166 fuel pump with level sensor assembly is an original part of the fuel system, designed for precise fuel delivery and accurate monitoring of its quantity in the tank. Thanks to its factory Mercedes design, this part ensures stable engine operation, correct system pressure, and reliable fuel level readings on the instrument cluster. This solution is particularly beneficial for professional repairs where compliance with factory specifications and predictable performance are crucial.

Specifications and technical data

• SKU: A1664702494
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1664702494
• Substitutable numbers: A1664702494, A 166 470 24 94
• Category: Fuel Pumps & Sending Units

Purpose and Function in the Fuel System

The presented fuel pump with level sensor for Mercedes W166 operates as a complete unit, supplying fuel from the tank to the injection system and simultaneously measuring its quantity. This assembly is responsible for:

• maintaining adequate fuel flow across a wide range of engine loads,
• stabilizing the powertrain's operation during startup and while driving,
• transmitting the fuel level signal to the vehicle's electronics and the dashboard indicator.

By integrating the pump with the level sensor, a cohesive, factory-standard solution is achieved, reducing the risk of inaccurate readings and fuel supply issues at low fuel levels.

Benefits of Using an Original Mercedes Part

The original fuel delivery unit, designed specifically for the W166 platform, ensures compatibility with the factory fuel pump housing, lines, and electrical connections. In practice, this means:

• guaranteed compatibility with the fuel system without the need for modifications,
• maintaining operating parameters as intended by the vehicle manufacturer,
• correct interaction with the electronics monitoring the fuel level.

Choosing an original solution is particularly important in modern vehicle designs where the fuel system and diagnostic systems are tightly integrated.

Performance and Installation Characteristics

The fuel delivery unit with level sensor is designed as a module to be installed in the fuel tank. In a typical service scenario, replacement involves removing the old assembly and installing the new one in the same mounting location. This design concept:

• simplifies the service process compared to replacing individual components,
• reduces the risk of leaks and issues with line routing,
• ensures consistent performance of the pump and fuel level sensor.

This part, from the Fuel Pumps and Level Sensors category, is crucial for operational safety – its proper functioning ensures both correct engine fueling and reliable information about the vehicle's range.

Condition and Application in Service Repairs

The offered fuel pump with level sensor is a used part, allowing for an economical restoration of the fuel system's functionality while maintaining the original Mercedes construction. This type of part is particularly useful in situations where:

• fuel pressure drops and starting problems occur,
• inaccurate fuel level readings or unstable indicator operation are present,
• a complete module replacement is necessary due to mechanical damage or corrosion of tank components.

Selecting a used OEM component helps maintain consistency with the vehicle's original design, which is important for both durability and correct computer diagnostics.

Assistance with Selection and Additional Information

To minimize the risk of incompatibility, it is advisable to select fuel supply modules and level sensors based on vehicle data and manufacturer markings. A detailed discussion on selecting used electronic and measurement components, including sensors, can be found in the Global Parts guide: Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and require other parts from the same group, such as fuel modules, level sensor assemblies, or complete tank inserts, check the available parts in the Mercedes Fuel Pumps and Level Sensors category.