Mercedes GLE 250 W166 Diesel Ad Blue Additive Tank Filler Pipe A1664704000

Mercedes GLE 250 W166 Diesel Ad Blue Additive Tank Filler Pipe is an original fuel system component designed for diesel vehicles, responsible for the safe and leak-proof refilling of the AdBlue additive. Thanks to its precise fit for the Mercedes GLE W166 design, it ensures stable operation of the exhaust emission reduction system and facilitates maintenance. It is a practical solution for users who want to maintain the efficiency of the SCR system and compliance with environmental requirements.

Specifications and technical data

• SKU: A1664704000
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1664704000
• Substitutable numbers: A1664704000, A 166 470 40 00
• Fuel type: Diesel
• Color: Blue
• Category: Fuel Tanks & Filler Necks

Purpose and function of the AdBlue filler

The presented AdBlue additive tank filler is a component from the Fuel tanks and filler pipes group, designed specifically for fuel systems in Mercedes diesel vehicles. It is responsible for guiding the working medium into the additive tank, minimizing the risk of spills and leaks during refueling. The design, adapted to the architecture of the GLE W166 body, allows for secure mounting and proper routing of the pipe within the wheel arch or filler recess, in accordance with factory mounting points.

Construction, color scheme, and ergonomics

The element is made in a characteristic blue color, which in vehicles with an SCR system clearly identifies the AdBlue additive circuit and distinguishes it from the standard fuel filler. This color scheme reduces the risk of errors during operation and facilitates quick location of the correct service nozzle. The profile of the filler has been designed to work with typical AdBlue dispenser nozzles, ensuring stable seating and smooth flow of the medium into the tank.

Operational parameters and fit for the Diesel system

The filler is intended for vehicles with a diesel engine, where AdBlue is a key element in reducing nitrogen oxides in the exhaust system. The appropriate shaping of the flow channel and the materials used are adapted to the chemical properties of the urea solution, which promotes stable operation in various temperature conditions. By maintaining the factory geometry, the element works with the original additive tank and equipment, without the need for installation modifications.

Condition, origin, and benefits of use

The offered filler comes from a Mercedes vehicle and is a used part, which allows for an economical repair of the system while maintaining the original assembly specification. Choosing an OEM part from the secondary market is a good solution in situations where mechanical damage to the filler, pipe cracking, or wear and tear has occurred. The use of original geometry and mounting points facilitates installation and reduces vehicle downtime in the workshop.

Integration with the fuel system and technical support

The AdBlue additive tank filler works with the vehicle's fuel system, creating a coherent system for supply and emission reduction. To better understand the relationships between the tank, pipes, and other system components, it is worth using the advice contained in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, where diagnostics, selection of parts by OEM numbers, and operating principles are discussed.

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 filler pipes, connectors, or additional pipe sections, check the available parts in the Mercedes fuel tanks and filler pipes category.