Water Hose Mercedes W204 C207 W212 W205 W213 M274 Coolant Line Pipe A2742031202

Mercedes W204 C207 W212 W205 W213 M274 Water Hose Pipe Tube is an original part from the Cooling System Hoses and Pipes group, designed for use in the M274 engine cooling system in selected Mercedes models. A used OEM component ensures factory geometric fit, proper coolant flow, and stable cooperation with other system elements. This is a practical solution for users who want to maintain a design consistent with the manufacturer's standard while optimizing repair costs.

Specifications and technical data

• SKU: A2742031202
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2742031202
• Substitutable numbers: A2742031202, A 274 203 12 02
• Category: Coolant Hoses

Purpose and Role in the Cooling System

The described water hose operates within the M274 engine coolant circuit, responsible for safe and controlled fluid routing between system components. A correctly selected water hose:

• maintains the cooling circuit's seal under typical thermal loads of the M274 unit,
• ensures stable fluid flow, which supports maintaining the engine's operating temperature,
• reduces the risk of overheating in urban and highway conditions,
• allows for maintaining the original hose routing geometry in the engine bay.

Thanks to a design consistent with the manufacturer's original specifications, the hose cooperates with standard spigots, clamps, and other cooling system components in the mentioned generations of Mercedes C-Class and E-Class.

Compatibility with Mercedes Models

The hose has been designed for use in Mercedes vehicles with the M274 engine, including popular body series W204, C207, W212, W205, and W213. This means that the geometry, connection diameters, and hose routing are adapted to the factory placement of components in the engine bay of these models.

To confirm compatibility with a specific trim level, model year, and engine variant, it is advisable to compare part numbers in the manufacturer's catalog or based on vehicle data (VIN). This approach minimizes the risk of mismatch and speeds up the installation process.

Technical Characteristics and Installation

As a part from the Cooling System Hoses and Pipes category, the water hose is adapted to operate in high-temperature environments and in contact with coolant. The hose construction includes:

• appropriate flexibility, allowing for compensation of engine vibrations,
• a shape adapted to the factory routing in the engine bay,
• ends prepared for cooperation with standard connectors and clamps.

During installation, it is recommended to check the condition of cooperating cooling system components, such as spigots, hose clamps, and sealing surfaces. Replacing the hose while inspecting other components helps reduce the risk of subsequent leaks.

Why Choose an Original Mercedes Water Hose

Using an original water hose in the cooling system offers a number of practical benefits:

• Factory Fit – maintaining original geometry and connection diameters facilitates installation and eliminates the need for modifications.
• Compatibility with Other System Components – the hose is designed to work with the standard coolant pump, radiator, and thermostat in the M274 engine.
• Controlled Operating Parameters – appropriately selected resistance to temperature and pressure supports the engine's thermal stability.
• Savings while Maintaining OEM Standard – a used part helps reduce repair costs while maintaining a solution consistent with the manufacturer's design.

Cooling System and Operation in High Temperatures

A functional water hose directly impacts engine safety during hot summer conditions, when the cooling system's load significantly increases. It is worth taking this opportunity to read the guide on the impact of high temperatures on engine cooling and ways to make sensible use of used parts – especially radiators and fans. Practical tips can be found in the article Summer Heat vs. Cooling System – Used Radiators and Fans as a Way to Save.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional hoses, return hoses, or connections to the radiator, check the available parts in the Mercedes Cooling System Hoses and Pipes category.