Mercedes SLK R172 Coolant Hose Radiator Cooling Water Pipe Line A1728303015

Mercedes SLK R172 Coolant Hose Radiator Cooling Water Pipe Line is an original cooling system component designed for precise coolant routing in the R172 generation SLK model. Thanks to its factory geometry and perfect fit for body and radiator mounts, this hose ensures stable system operation and helps maintain the correct engine operating temperature under various driving conditions. This is a solution for users seeking a proven cooling component that complies with Mercedes factory specifications.

Specifications and technical data

• SKU: A1728303015
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1728303015
• Substitutable numbers: A1728303015, A 172 830 30 15
• Category: Coolant Hoses

Function and role in the cooling system

The radiator hose in the Mercedes SLK R172 is responsible for directing coolant flow between system components, such as the radiator, connectors, and other hoses. A properly shaped pipe minimizes the risk of kinks, flow restrictions, and unwanted vibrations, which translates into:

• stable coolant flow under engine load,
• maintaining proper system pressure,
• reducing the risk of localized overheating in the engine bay.

Thanks to a design consistent with Mercedes factory solutions, the hose works with original clamps and brackets, which facilitates installation and reduces the risk of leaks.

Compatibility and fit for Mercedes SLK R172

The presented hose has been designed specifically for the Mercedes SLK R172, which means it fits the engine bay space, routing, and mounting points provided by the manufacturer. In practice, this translates into:

• no need for modifications or adjustments to the hose length,
• correct positioning relative to the radiator and other cooling system components,
• preservation of the original coolant flow concept.

Such a solution is particularly beneficial when servicing premium cars, where maintaining the factory configuration is important for reliability and subsequent diagnostics.

Characteristics of the used component

The offered hose belongs to the group of used parts, which allows for an economical repair of the cooling system while maintaining the original origin of the component. In practice, this means the possibility of replacing a worn or damaged hose with a part from disassembly that retains its factory geometry and operating characteristics. For many Mercedes users, this is a reasonable compromise between repair costs and maintaining consistency with the manufacturer's solutions.

Application in service and cooling system maintenance

Replacing a radiator hose is recommended not only after visible damage but also as a preventive measure when signs of material aging appear, such as cracks, loss of elasticity, or signs of abrasion. Installing a properly selected hose in the Mercedes SLK R172 helps to:

• limit the risk of sudden coolant loss,
• protect the engine from overheating in city and highway conditions,
• maintain proper fan and radiator operation due to stable flow.

For workshops specializing in the Mercedes brand, using an original hose also facilitates future inspections and cooling system diagnostics.

Expanding Mercedes cooling system service

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 connecting pipes, check the available parts in the Mercedes cooling system hoses and pipes category.

To better plan service during high temperatures and understand the impact of thermal load on the entire cooling system, it is worth checking out our guide: Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. You will find practical tips there on how to combine hose replacement with checking other system components.