Mercedes W204 Coolant Hose Petrol M274 Cylinder Head Water Line A2742000982

The Mercedes W204 Benz M274 Coolant Hose Cylinder Head Water Pipe is an original cooling system component designed for M274 series gasoline engines. This precisely shaped pipe ensures stable coolant flow within the cylinder head, supporting safe heat dissipation and proper engine operation. It's a practical solution for users who want to maintain the factory cooling characteristics of their Mercedes.

Specifications and technical data

• SKU: A2742000982
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2742000982
• Substitutable numbers: A2742000982, A 274 200 09 82
• Fuel type: Petrol
• Category: Coolant Hoses

Purpose and Function in the Cooling System

The cylinder head water hose in the M274 gasoline engine is responsible for directing coolant in the cylinder head area, where operating temperatures are particularly high. A correctly selected component in this section of the cooling system:

• stabilizes fluid circulation in the most thermally stressed area,
• reduces the risk of localized cylinder head overheating,
• supports maintaining the correct operating temperature of the gasoline engine.

By maintaining the original shape and diameter, the cylinder head cooling pipe allows for flow parameters consistent with the design specifications of the M274 unit.

Benefits of Using an Original Hose

Using an original hose in the gasoline engine's cooling system offers tangible operational benefits. This type of component ensures:

• factory fit to spigots and mounting points within the cylinder head and adjacent components,
• appropriate rigidity and flexibility under varying temperature conditions,
• compatibility with the cooling system designed for the M274 unit.

For the user, this means predictable cooling system behavior, reduced risk of leaks, and easier diagnosis of potential future faults.

Application in M274 Gasoline Engines

The presented hose is intended for Mercedes W204 vehicles equipped with an M274 family gasoline engine. The component operates in close proximity to the cylinder head, so its condition affects:

• engine operating temperature stability,
• uniform cooling of the channels in the cylinder head,
• overall cooling system reliability during city and highway driving.

Selecting the correct hose for a specific engine configuration is crucial for maintaining proper coolant circulation and avoiding undesirable pressure drops in the system.

Component Condition and Installation Aspects

The offered hose belongs to the Cooling System Hoses and Pipes group and is a used part, allowing for economical repair while maintaining original specifications. Before installation, a standard visual inspection is recommended, checking the connection surfaces and assessing the material's flexibility at points subjected to thermal load.

In workshop practice, installing this type of hose involves correctly seating it on the spigots, using appropriate clamps, and bleeding the cooling system after refilling the fluid. Adhering to service procedures minimizes the risk of leaks and facilitates subsequent operation.

Technical Support and Additional Materials

During the summer, the cooling system operates under particularly demanding conditions, so it's worth familiarizing yourself with practical tips on operation and component selection. You can read more about the impact of high temperatures on engine cooling and how used parts can support sensible cost management in the guide 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 cooling system area in your Mercedes and need other parts from the same group, such as return hoses, flexible connecting hoses, or pipes supplying fluid to the radiator, check the available parts in the Mercedes Cooling System Hoses and Pipes category.