Mercedes ML W164 GL X164 Water Coolant Hose Pipe Radiator A1645002775

Mercedes ML W164 GL X164 Water Coolant Hose Pipe Radiator is an original component from the Cooling system hoses and pipes group, designed for use in the cooling systems of Mercedes vehicles. This used OEM component ensures proper coolant flow between engine components and the radiator, which translates into a stable operating temperature for the power unit. It is a practical solution for users looking for a proven part at a reasonable price, while maintaining factory geometry and fitment.

Specifications and technical data

• SKU: A1645002775
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1645002775
• Substitutable numbers: A1645002775, A 164 500 27 75, A1645010182, A 164 501 01 82
• Category: Coolant Hoses

Purpose and function in the cooling system

The presented water hose is designed to work with the cooling system in Mercedes ML W164 and GL X164 models. Its task is to provide stable and leak-free coolant routing between individual components, which helps maintain the optimal engine operating temperature under various load and climate conditions.

Thanks to the factory OEM design, the hose maintains the correct shape, diameter, and positioning in the engine bay, which reduces the risk of rubbing against other components, incorrect tension, or leaks at the connections.

Advantages of using an original Mercedes hose

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

• Factory fitment to engine and radiator mounts and connectors, without the need for modifications.
• Properly selected material flexibility, allowing it to compensate for engine vibrations.
• Geometry specified by the manufacturer, facilitating correct hose routing in the engine bay.
• Compatibility with existing clamps and mounting brackets, which speeds up service.

A used OEM component is also a reasonable compromise between cost and quality, especially for vehicles that are used intensively or have higher mileage, where replacing the entire cooling system with new parts is not always economically justified.

Condition, verification, and preparation for installation

The hose is offered in a used condition, which in practice means it has been removed from a vehicle and verified for suitability for further use. Such components are frequently chosen by workshops and individual users who expect a proven part of factory origin, without having to resort to cheaper replacements of uncertain quality.

Before installation, a standard service procedure is recommended: checking the surface for cracks, abrasions, and deformations, as well as assessing the condition of clamps and connectors. A correctly installed hose, while maintaining tight connections, allows for trouble-free operation of the cooling system in typical road conditions.

Practical installation and maintenance tips

Replacing a water hose in the cooling system is a good time to:

• check the condition of other hoses and pipes in the engine bay,
• assess the quality of the coolant and replace it if necessary,
• check the tightness of connections at the radiator, thermostat, and water pump ports,
• verify the operation of the fan and the general patency of the cooling system.

Such an approach helps reduce the risk of engine overheating and ensures more predictable vehicle operation, especially in urban conditions and when driving under load.

Technical support and additional information

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 hoses, return lines, or sections connecting to the radiator, check the available parts in the Mercedes cooling system hoses and pipes category.

During high temperatures, it is particularly important to maintain the efficiency of the entire cooling system – you can find more practical tips on this subject in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which describes the impact of heat on engine operation and the importance of properly selected components.

If you are interested in how the quick availability of used OEM parts can shorten vehicle downtime in the workshop and reduce repair costs, it is also worth reading the guide Availability of car parts off-the-shelf vs. repair time – how do used OEM parts shorten workshop stays?, which discusses the practical aspects of selecting and replacing components in modern vehicles.