Mercedes-Benz A B Class W169 W245 1 Petrol Fuel Pump Sender Unit A1694700494

Mercedes-Benz A B Class W169 W245 1 Petrol Fuel Pump Sender Unit is an original fuel system component designed for precise fuel delivery and reliable fuel level measurement in the tank. Thanks to its factory design for the Mercedes brand, it ensures compatibility with the vehicle's electronics and stable engine operation, which translates into smooth and predictable vehicle performance.

Specifications and technical data

• SKU: A1694700494-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1694700494
• Substitutable numbers: A1694700494, A 169 470 04 94, BG
• Fuel type: Petrol
• Offset (ET):
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The offered fuel pump with sender unit is a component from the Fuel pumps and level sensors category, designed to work with petrol engines in Mercedes-Benz A-Class and B-Class W169 and W245 generations. The unit is responsible for both maintaining the correct fuel pressure in the system and transmitting information about the current fuel level in the tank to the dashboard.

Being dedicated to a specific vehicle platform allows for maintaining the correct operating characteristics of the fuel system, reduces the risk of engine control unit errors, and eliminates issues with incorrect fuel level readings on the instrument cluster.

Construction of the fuel pump and level sensor unit

The complete fuel pump module with level sensor is an integrated unit mounted inside the fuel tank. A single housing contains the mechanical pumping part, electrical components responsible for power supply, and the fuel level sensor working with the float. This solution simplifies installation and maintenance while ensuring consistent operating parameters.

The system is adapted for use with petrol, which means appropriate selection of materials and seals for chemical resistance and durability in a fuel environment. Using an original module allows for maintaining factory flow characteristics and pressure stability, which is important for engine performance and correct fuel dosing by the injectors.

Benefits of using an original used module

Choosing an original, used fuel pump module with a level sensor for a Mercedes is a solution that allows you to balance cost control with technical compatibility. A component from factory production is designed for a specific vehicle platform, which ensures that it:

• maintains the correct operating parameters of the petrol fuel system,
• works with the electrical installation and engine controller without the need for modifications,
• reduces the risk of starting problems, engine misfiring, or power loss,
• ensures consistent fuel level readings on the dashboard.

For many users, it is also important that using an original module from the secondary market allows avoiding quality compromises typical of low-budget parts, while maintaining a reasonable level of repair costs.

Selection by part numbers and installation compatibility

The fuel pump module with level sensor is a component specific to a given body version and fuel system, so it is crucial to use the OEM number and interchangeable numbers when selecting. This allows you to verify compatibility with a specific version of the Mercedes A-Class or B-Class and avoid installation problems, such as differences in electrical connectors or the geometry of the pump basket.

To deepen your knowledge about the diagnostics and operation of the fuel system, it is worth using a guide describing the operation of pumps, injectors, and the fuel tank – a detailed discussion can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Application in service practice

Replacing the fuel pump module with a level sensor is a typical service operation in case of starting problems, engine stalling under load, or unstable fuel level readings. Using an original unit dedicated to the Mercedes A/B Class allows you to restore the correct operating parameters of the fuel system without the need for installation modifications.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other elements from the same group, such as pump modules, level sensors, or complete in-tank basket units, check the available parts in the Mercedes fuel pumps and level sensors category.