AdBlue Pump Mercedes W164 W212 W221 Additive Tank Assembly Module A0024706894

AdBlue Pump Mercedes W164 W212 W221 Additive Tank Assembly Module is a specialized component of the exhaust emission reduction system in Mercedes vehicles, integrated with the additive tank. This professional module ensures precise delivery of the AdBlue solution to the exhaust system, supporting the efficient operation of the SCR system and maintaining emission standards at the required level. Thanks to its design, which complies with factory specifications, this part is intended for high-end Mercedes vehicles, such as the W164, W212, or W221.

Specifications and technical data

• SKU: A0024706894
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0024706894
• Substitutable numbers: A0024706894, A 002 470 68 94, 0928404016
• Category: Fuel Tanks & Filler Necks

Purpose and function in the AdBlue system

The AdBlue pump module with the additive tank is responsible for the intake, dosing, and pumping of the AdBlue solution from the reservoir to the exhaust system. A properly functioning pump is crucial for:

• maintaining the correct pressure in the AdBlue circuit,
• stable operation of the SCR system under various engine load conditions,
• reducing nitrogen oxide (NOx) emissions in accordance with emission standard requirements,
• avoiding engine limp mode associated with additive system errors.

In Mercedes W164, W212, and W221 class vehicles, a functional additive tank module translates into trouble-free operation of the fuel and exhaust system and the absence of warning messages related to AdBlue.

Construction of the additive tank module

The described module combines several key components of the AdBlue additive system in one housing. In a typical configuration, it includes:

• an additive tank serving as a reservoir for the solution,
• an integrated pump responsible for pumping the medium,
• internal hoses and connection ports for the vehicle's installation,
• components prepared for compatibility with the factory electrical system and controller.

Such a design enables consistent, factory-standard integration with the vehicle's system, and replacing the entire module is often the fastest and most predictable service solution in the event of pump failures or tank leaks.

Benefits of using an original module in a Mercedes

Using an AdBlue pump module dedicated to the W164, W212, and W221 series provides a number of practical benefits in daily operation:

• Full compatibility with the installation – matching factory harnesses, hoses, and mounts in the Mercedes body.
• Stable SCR system operation – proper dosing of the additive reduces the risk of engine controller errors and power loss.
• Optimization of service costs – replacing the complete additive tank module often shortens repair time compared to attempts to regenerate individual components.
• Safe operation – a sealed additive system minimizes the risk of AdBlue leaks and corrosion of components in the vicinity of the tank.

Condition, origin, and practical application

The offered AdBlue pump module with the additive tank comes from a dismantled Mercedes vehicle and is an item from the Fuel tanks and filler pipes category. Such used components are frequently chosen by professional workshops and informed users who are looking for solutions consistent with the vehicle's factory design while maintaining reasonable repair costs.

Before installation, a standard service procedure is recommended, including checking the tightness of the installation, the condition of the AdBlue supply lines, and verifying the correct operation of the system after connecting to diagnostics. A properly selected additive tank module allows for the restoration of full functionality of the emission reduction system in Mercedes W164, W212, and W221 class cars.

If you are planning a comprehensive repair or upgrade of the fuel and additive supply and storage zone in your Mercedes and need other elements from the same group, such as tanks, filler pipes, or integrated modules, check the available parts in the Mercedes Fuel tanks and filler pipes category.

To better understand the relationships between the additive tank, pump, injection system, and the main fuel tank, it is worth consulting a service guide describing the entire engine supply path – a practical supplement to your knowledge will be the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses diagnostics, part selection by numbers, and the principles of proper operation.