Mercedes W164 Fuel Pump Tank Fuel Sender Unit A1644701294

Mercedes W164 Fuel Pump Tank Fuel Sender Unit is an original fuel system component designed for precise fuel delivery and reliable measurement of fuel levels in the tank. Thanks to the factory Mercedes design, this part ensures stable engine operation, accurate readings on the instrument cluster, and full compatibility with the vehicle's electronics. This is the ideal solution for users seeking a proven OEM component rather than universal aftermarket replacements.

Specifications and technical data

• SKU: A1644701294
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1644701294
• Substitutable numbers: A1644701294, A 164 470 12 94
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The presented fuel pump with sender unit is a component of the Fuel pumps and level sensors category, responsible for both pumping fuel from the tank and transmitting fuel level information to the gauge. Using a complete tank module reduces the risk of fuel pressure issues, facilitates starting, and stabilizes the powertrain's operation across the full load range.

The factory design of the module ensures:

• proper fitment to the tank geometry in the Mercedes W164,
• maintenance of correct fuel flow at various fill levels,
• consistency of the level sensor signal with the instrument cluster electronics.

Benefits of using an original Mercedes module

Using an original fuel module in a Mercedes W164 allows you to maintain the factory performance parameters of the fuel system. The properly matched characteristics of the pump and fuel level sensor minimize the risk of incorrect readings, engine stalling at low fuel levels, or fuel system venting issues.

Key advantages include:

• Compatibility with the electrical system – correct connectors and electrical parameters, with no need for wiring modifications.
• Stable engine fuel supply – maintaining appropriate fuel pressure under typical operating conditions.
• Proper cooperation with vehicle electronics – correct operation of the fuel gauge and onboard systems.

Component condition and installation aspects

The offered fuel module is a used part, which in practice represents a favorable compromise between cost and maintaining the manufacturer's original specifications. In many cases, installing a factory-original used component is more predictable than installing a cheap replacement with uncertain parameters.

Before installation, it is recommended to:

• check compatibility by OEM number and interchangeable part numbers,
• verify the condition of the electrical socket and fuel lines in the vehicle,
• use new tank seals to avoid leaks and fuel odors.

Thanks to the factory design, installation proceeds in a manner similar to the manufacturer's service procedure, which facilitates workshop work and reduces vehicle downtime.

Selection by part numbers and technical compatibility

To ensure full compatibility with a specific version of the Mercedes W164, it is worth verifying the part by its OEM number and available reference numbers. This selection method reduces the risk of purchasing an incompatible module, especially in cases of differences resulting from engine versions or model years.

If you want to learn more about the safe selection of used electronic components and sensors in a car, methods of verifying compatibility, and selection by part numbers, the following guide will be helpful: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

Expanding the fuel system in a Mercedes

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 additional pump modules, level sensor assemblies, or complete tank inserts, check the available parts in the Mercedes Fuel pumps and level sensors category.

By choosing an original fuel module for your Mercedes W164, you are investing in fuel system consistency, predictable vehicle behavior, and easier diagnostics in the future. This solution is particularly beneficial for users who expect stable engine operation and accurate fuel level readings without experimenting with random aftermarket replacements.