Mercedes ML W166 Diesel Engine AdBlue Additive Tank Fluid Reservoir A1664703701

Mercedes ML W166 Diesel Engine AdBlue Additive Tank Fluid Reservoir is a specialized component of the exhaust gas treatment system in diesel vehicles, designed for Mercedes models. It is responsible for the safe storage of AdBlue solution and its stable delivery to the SCR system, which allows for the effective reduction of nitrogen oxide emissions in Diesel-powered vehicles.

Specifications and technical data

• SKU: A1664703701
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1664703701
• Substitutable numbers: A1664703701, A 166 470 37 01
• Fuel type: Diesel
• Category: Fuel Tanks & Filler Necks

Function and role of the AdBlue SCR tank

The Mercedes ML W166 Diesel Engine AdBlue Additive Tank Fluid Reservoir is a key component of the exhaust emission reduction system in modern diesel units. Its task is to maintain the proper storage conditions for the AdBlue fluid and ensure a stable supply to the dosing system, which translates into the correct operation of the SCR catalyst and compliance with strict emission standards.

The precisely designed structure of the tank works with the fuel and emission system equipment in diesel-powered cars, minimizing the risk of engine malfunctions, emergency mode activation, or error messages related to the exhaust gas treatment system.

Compatibility and fit for Mercedes ML W166

The offered tank is intended for use in Mercedes ML W166 series vehicles with a Diesel engine that utilize an SCR system with AdBlue additive. Thanks to its factory design, it ensures a proper fit to the original mounting points and correct integration with the vehicle's installation, which facilitates assembly and reduces the time required for part replacement.

Selecting parts according to manufacturer markings and reference numbers allows for maintaining compliance with the vehicle's factory specifications, which is important for both the durability of the system and the correct operation of diagnostic systems.

Condition of the item and benefits of using a used part

The presented AdBlue SCR tank is a used item, which is a beneficial solution for users looking for a technically sound component in a more economical configuration. A properly selected used tank allows for restoring the correct operation of the emission reduction system without the need to invest in a new part, while maintaining compliance with the vehicle's factory design.

Using an original, used component from this group helps reduce the risk of compatibility issues that may occur with replacements of uncertain parameters, while simultaneously maintaining stable operation of the AdBlue system in a diesel-powered car.

Technical support and selection by OEM/VIN

To correctly select the AdBlue SCR tank for a specific version of the Mercedes ML W166, it is worth using the manufacturer's markings and vehicle data (e.g., VIN number). This facilitates the identification of the correct system configuration and minimizes the risk of improper fitment to the fuel and emission installation in a Diesel-powered car.

For users who want to deepen their knowledge about the construction and operation of supply systems, a guide describing diagnostics, selection by VIN/OEM, and regeneration principles will be useful – this is discussed in detail in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which contains practical tables and answers to frequently asked questions.

Related system components and further expansion

If you are planning a comprehensive repair or modernization of the fuel supply and storage area in your Mercedes and need other elements from the same group, such as additional tanks, filler pipes, or mounting elements, check the available parts in the category Mercedes fuel tanks and filler pipes.

When planning broader service work – especially before the winter season, when the AdBlue and fuel systems are particularly exposed to temperature changes – it is also worth familiarizing yourself with practical tips regarding used components, described in the guide Winter essentials: which used car parts are worth checking and replacing before the frost?.