Mercedes C207 C218 W204 W212 W213 Coolant Water Line Pipe Hose A6422030602

Mercedes C207 C218 W204 W212 W213 Coolant Water Line Pipe Hose is an original cooling system component from the Lines, hoses and pipes group, designed for use in selected Mercedes mid-size and luxury models. Thanks to its factory-fit design, it ensures stable coolant flow, supporting safe engine operation under various operating conditions. This is a solution for users looking for a proven, well-engineered part instead of universal replacements.

Specifications and technical data

• SKU: A6422030602
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6422030602
• Substitutable numbers: A6422030602, A 642 203 06 02, A 642 203 00 00, A6422030000
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The coolant hose in this configuration is responsible for the controlled transport of operating fluid between cooling system components in Mercedes C and E series cars and related body styles. A properly selected hose:

• maintains the tightness of the coolant circuit under typical engine thermal loads,
• reduces the risk of local overheating resulting from insufficient flow,
• supports the stable operation of the thermostat, radiator, and other system components.

Due to its design, which complies with the vehicle manufacturer's requirements, the hose works with factory connectors and clamps, facilitating installation and subsequent maintenance.

Benefits of using an original Mercedes hose

Using a coolant hose dedicated to specific Mercedes body styles provides measurable operational benefits. The most important include:

• Factory geometric fit – the appropriate shaping and length of the hose minimize stress and twisting, which translates into less material wear over time.
• Stable operation within typical engine operating temperature ranges, without the need for additional adapters or modifications.
• Easier diagnosis of potential leaks, as the hose routing is consistent with the manufacturer's service documentation.

For users who want to maintain the structural integrity of the cooling system, choosing such a component is a practical way to maintain predictable engine performance parameters.

Performance characteristics and installation

The offered hose belongs to a group of elements that are exposed to temperature changes, vibrations, and contact with coolant during operation. Proper selection of this part is important for:

• maintaining appropriate pressure in the cooling circuit,
• reducing the risk of leaks at critical connection points,
• ensuring even heat distribution throughout the system.

The hose is designed for installation in place of the factory element, which allows for the use of standard service procedures. For workshops, this means predictable labor time, and for the user – greater confidence in the final repair result.

Product condition and service application

The item comes from the Mercedes range and is intended for reinstallation in vehicles where it is necessary to replace a worn or damaged coolant hose. This type of part is suitable for both routine maintenance and more extensive work related to the cooling system, such as replacing the radiator, water pump, or thermostat.

Choosing a hose from this group allows for consistency with other system components, which is important for long-term vehicle operation and when planning future inspections.

Cooling system expansion and auxiliary materials

If you want to better understand the impact of individual cooling system components on engine durability, it is worth checking out technical materials. A practical addition to your knowledge could be an article describing typical symptoms of overheating and the importance of correctly selected components – you can find it here: Engine cooling system – overheating, repair, and used radiators.

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