Mercedes W204 Water Hose Radiator Coolant Cooling Pipe Line A9015012782

The Mercedes W204 Radiator Coolant Hose is an original part from the Cooling System Hoses and Pipes group, designed for operation within the coolant circuit. It ensures a sealed and stable connection between the radiator and other system components, supporting proper heat dissipation from the engine. A used OEM component is a sensible choice for cooling system service when you prioritize factory fitment and controlled repair costs.

Specifications and technical data

• SKU: A9015012782
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9015012782
• Substitutable numbers: A9015012782, A 901 501 27 82
• Category: Coolant Hoses

Purpose and Function in the Cooling System

This hose is a part of the coolant flow path between the radiator and other engine sub-assemblies. It is responsible for:

• stable routing of coolant in the designated direction,
• maintaining system integrity under varying temperatures and pressures,
• reducing the risk of engine overheating through proper fluid circulation.

Thanks to its design tailored to the specific Mercedes W204 platform, the hose maintains the correct geometry, which facilitates installation and minimizes system stress.

Original Mercedes Part – Benefits of Use

As a Mercedes brand part, the coolant hose has been designed for the specific architecture of the engine bay. In practice, this means:

• factory fitment to the mounts and spigots of the radiator and other components,
• maintaining the flow diameter as specified by the manufacturer,
• compatibility with the operating parameters of the cooling system in the given model.

A used OEM part allows for maintaining the integrity of the entire cooling system without the need for adapters or modifications, which is important for both durability and operational safety.

Used Condition and Installation Aspects

The hose is offered in used condition, which is an advantageous solution for service repairs where the cost-to-quality ratio is a consideration. Before installation, a standard visual inspection for any signs of wear is recommended to ensure full system sealing.

Due to its factory geometry, installation in most cases involves removing the old hose and fitting the new part into the existing mounting points, ensuring the correct tightening torque for clamps and connectors.

Technical Support and Part Selection

The component has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection for a specific body version and engine. When selecting used components, it is particularly important to compare the markings with the vehicle's documentation and the existing parts in the car.

To better understand how high temperatures affect the entire cooling system and why functional hoses and radiators are crucial for engine safety, it is worth reading the guide: Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings.

If you want to further streamline the process of selecting used components and avoid mistakes related to OEM marking compatibility, the article will be helpful: No More Wrong Purchases! How to Professionally Select Used Car Parts.

Cooling System Expansion in Mercedes W204

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 additional pipes, return hoses, or connecting sections to the radiator, check the available parts in the category Mercedes Cooling System Hoses and Pipes.

By choosing an original coolant hose for the Mercedes W204, you are investing in a solution that aligns with the manufacturer's original specifications, which translates to stable engine operation, predictable operating temperature behavior, and easier diagnostics of the entire system in the future.