Mercedes C118 W177 Radiator Coolant Hose AMG Water Cooling Pipe A1775010203

Mercedes C118 W177 Radiator Coolant Hose AMG Water Cooling Pipe is an original cooling system component designed for petrol engines, specifically engineered for the W177/C118 model family. Thanks to its factory-spec geometry and diameter, it ensures stable coolant flow, supporting the correct operating temperature of the power unit and the thermal safety of the auxiliary equipment.

Specifications and technical data

• SKU: A1775010203
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1775010203
• Substitutable numbers: A1775010203, A 177 501 02 03
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

This hose is a cooling system component responsible for transporting fluid between key engine and radiator parts. In Mercedes compact class vehicles with AMG petrol units, proper fluid circulation has a direct impact on:

• maintaining a stable engine operating temperature under load,
• reducing the risk of overheating in urban and highway driving conditions,
• proper operation of the thermal management system,
• extending the service life of cooperating components (radiator, water pump, connectors).

The original design of the hose ensures a perfect fit with factory mounts and connectors, which facilitates installation and minimizes the risk of leaks.

Construction and fitment for Mercedes C118 / W177 AMG

The Mercedes C118 W177 Radiator Coolant Hose AMG Water Cooling Pipe has been designed for specific routing in the engine bay, taking into account the geometry of the power unit, auxiliary equipment, and body components. The properly selected material flexibility allows for the compensation of engine vibrations while maintaining a stable hose position during driving.

The factory hose ends are prepared for use with original clamps and quick-connectors, which eliminates the need for modifications and allows for compliance with the vehicle manufacturer's specifications. As a result, the replacement process is predictable and the service outcome is consistent.

Benefits of using an original hose

Using an original hose in a petrol engine cooling system provides a number of practical service and operational benefits:

• Factory fitment – shape and length compliance with the vehicle manufacturer's design.
• Reduced risk of leaks due to proper adhesion to connectors and joints.
• Stable cooling system operation across a wide range of temperatures and loads.
• Ability to maintain consistency with other AMG cooling system components.

For workshops and users, this means predictable installation time and a lower risk of needing to re-intervene in the cooling system after repairs.

Component condition and service application

The offered hose comes from the Hoses, pipes and lines group and is a used part, making it an attractive cost-effective alternative while maintaining the original manufacturer's specifications. It is particularly useful in situations where it is necessary to replace a damaged section of the cooling system after a collision, mechanical failure, or engine overheating.

Selecting an original hose is recommended wherever it is important to maintain the factory fluid flow characteristics, as well as compatibility with other cooling system components in AMG versions.

Expanding the cooling system in Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional cooling system hoses, pipes, or lines, check the available parts in the Mercedes Hoses, pipes and lines category.

In the case of post-accident repairs or extensive engine bay service work, it is also worth checking out practical tips regarding the selection of dismantled parts – you will find them in the article Bodywork and chassis – post-accident repairs using dismantled parts, which discusses the approach to used OEM parts in the context of safety and cost-effectiveness of repairs.