Mercedes C207 W204 W212 Fuel Hose Tube Pipe Line Return A2044761126

Mercedes C207 W204 W212 Fuel Hose Tube Pipe Line Return is an original fuel system component designed for selected Mercedes C-Class, E-Class, and coupe models. It is responsible for the safe return of fuel from the fuel rail or high-pressure system to the tank, stabilizing engine operation and supporting correct fuel supply parameters. Thanks to its factory geometry and connectors, the hose ensures a secure fit to the vehicle's fuel system.

Specifications and technical data

• SKU: A2044761126
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2044761126
• Substitutable numbers: A2044761126, A 204 476 11 26, A2044761126V, A 204 47611 26 V
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The fuel return hose in Mercedes C207, W204, and W212 models plays a key role in the fuel circulation between the engine and the tank. It is responsible for:

• draining excess fuel from the injection system back to the tank,
• maintaining stable operating pressure in the system,
• reducing the risk of air entering the fuel system,
• safely routing the medium within the engine bay and chassis.

Thanks to its factory fitment, the hose works with original quick-connectors and mounting brackets, which facilitates service and reduces vehicle downtime. A correctly selected return hose reduces the risk of leaks as well as problems with starting and the smoothness of the engine's operation.

Construction and fitment for Mercedes models

This item belongs to the Hoses, pipes, and lines group, meaning it has been designed to operate in a fuel environment, taking into account resistance to temperature, vibrations, and contact with engine components. The shape, diameters, and placement of the connectors comply with the factory specifications for selected Mercedes C207, W204, and W212 configurations, which allows for:

• installation at original mounting points,
• proper routing of the hose without tension,
• maintaining required bending radii and clearance from hot components.

The original origin from the Mercedes group helps maintain the consistency of the entire fuel system and facilitates future diagnostics.

Benefits of using an original return hose

Using a return hose from the same product line as factory components brings measurable operational benefits:

• Stable fuel system operation – proper return flow supports uniform fuel pressure.
• Better system tightness – matched connectors limit the risk of leaks and fuel odors.
• Consistency with service documentation – facilitates workshop work and subsequent inspections.
• Reduction of modifications – no need to use adapters or modify the hose route.

This solution is particularly recommended for repairs where the repeatability of factory parameters and predictable vehicle behavior in the long term are important.

Condition and service application

The offered item is from the used parts group, making it an attractive cost-effective alternative while maintaining the original design. It works well both for the typical replacement of a damaged hose and for larger service tasks related to the fuel system, such as replacing injectors, the pump, or the fuel tank. Selecting a hose compatible with the C207/W204/W212 platform allows for reducing the risk of incorrect installation and speeds up the repair process.

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 supply lines, flexible fuel hoses, or rigid guide pipes, check the available parts in the Mercedes Hoses, pipes, and lines category.

Additional technical support

For extensive service work, also involving the powertrain and drivetrain, a broader look at the vehicle configuration and the selection of components for a specific driving style may be helpful. In such a case, it is worth referring to the guide material Dismantled drive axles and differentials – how to choose gear ratios for your driving style, which helps in understanding the relationship between drivetrain components and vehicle operation.