Mercedes W176 C117 OM607 Fuel Feed Return Line Pipe Hose 166714557R

Mercedes W176 C117 OM607 Fuel Feed Return Line Pipe Hose is an original diesel fuel supply system component designed for the OM607 engine in the W176 body. The carefully engineered geometry of the lines ensures stable Diesel fuel delivery and proper compatibility with factory engine components.

Specifications and technical data

• SKU: 166714557R
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 166714557R
• Substitutable numbers: 166714557R
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The complete set of fuel lines in this model is responsible for the safe and leak-proof delivery of diesel fuel from the tank and/or filtration system to the engine supply components. For diesel units, maintaining proper flow and resistance to operating pressure is crucial, which is why the design of the lines is tailored to the specific requirements of the Diesel engine.

This item belongs to the Lines, hoses and pipes group, meaning it works in conjunction with other fuel system components, such as the pump, filter, or fuel rail, to create a consistent and sealed fuel flow path.

Benefits of using original fuel lines

Using fuel lines dedicated to the Mercedes W176 with the OM607 engine allows you to maintain the factory performance parameters of the power unit. Properly selected internal diameters, bend shapes, and mounting points reduce the risk of air ingress, pressure drops, or unwanted vibrations of the lines during driving.

• stable fuel flow across the entire load range of the Diesel engine,
• perfect fit for factory brackets and routing in the engine bay,
• compliance with the operating parameters of the injection system,
• reduced risk of leaks compared to universal solutions.

As a result, the fuel supply system maintains predictable behavior, which translates into smooth engine operation, easier starting, and a reduction in operational issues related to fuel delivery.

Technical characteristics and installation

The fuel lines in this set are adapted for use with Diesel fuel, ensuring appropriate material resistance to diesel oil and the temperature conditions typical for diesel engines. The design features factory ends and connectors, which facilitates installation in place of a worn-out part without the need for system modifications.

As an element from the Lines, hoses and pipes group, the product is intended for installation in the existing Mercedes fuel system, maintaining the original routing of the lines. Proper positioning and securing are important for the safety and durability of the entire system, which is why installation in accordance with the vehicle's service documentation is recommended.

Condition of the item and service application

The offered set of fuel lines is a used part, making it an attractive service solution for maintenance repairs or restoring the efficiency of the fuel supply system in high-mileage vehicles. In many cases, this allows for an economical replacement of worn or damaged lines while maintaining the original technical specifications.

This solution is suitable both for typical repairs after a leak is detected and for larger works within the fuel system, e.g., after engine or accessory removal, when the existing lines are already worn out.

Expansion of the system in the same group

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 flexible supply sections, return lines, or rigid fuel pipes, check out the available parts in the Mercedes Lines, hoses and pipes category.

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