Mercedes W447 OM622 Water Coolant Hose Pipe Line Tube Reservoir Tank A4475014300

Mercedes W447 OM622 Water Coolant Hose Pipe Line Tube Reservoir Tank for the Mercedes Vito/V‑Class W447 with a diesel engine is an original component designed to connect the expansion tank to the rest of the cooling system. Thanks to its factory geometry and precise fit for the specific W447 generation, it ensures stable coolant flow and proper operation of the entire system. This is a practical service solution for users who want to maintain a configuration consistent with the manufacturer's standards.

Specifications and technical data

• SKU: A4475014300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4475014300
• Substitutable numbers: A4475014300, A 447 501 43 00
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and function in the cooling system

This hose belongs to the Cooling system hoses and pipes group and is responsible for transporting coolant between the expansion tank and the rest of the system in a Mercedes W447 with a diesel engine. A correctly selected component in this location is crucial for:

• maintaining proper pressure in the cooling system,
• a stable coolant level in the reservoir,
• efficient venting of the cooling circuit,
• reducing the risk of engine overheating.

Using a hose dedicated to the specific W447 platform helps avoid stress, leaks, and incorrect hose routing in the engine bay.

Benefits of using an original Mercedes hose

The original cooling hose for the W447 has been designed for a specific mounting system, connector diameters, and routing path in the engine bay. In practice, this means:

• secure fitment with the reservoir connectors and other system components,
• appropriate material flexibility while maintaining resistance to temperature and pressure,
• minimized risk of rubbing against other components (wiring harnesses, housings, body elements),
• easier installation and removal during service work.

For diesel engines, stable operating temperature is particularly important, which is why the correct cooling hose has a direct impact on the durability of the power unit and the comfort of vehicle operation.

Condition of the component and service application

The offered hose is a used part, making it a reasonable choice for maintenance repairs when the priority is to maintain the original design while optimizing costs. This type of part is suitable for, among other things:

• fixing coolant leaks in the area of the expansion tank,
• repairs after engine overheating, when verification and replacement of hoses are necessary,
• comprehensive maintenance of the cooling system in a Mercedes W447 with a diesel engine.

Selecting a hose that complies with factory specifications allows for maintaining the original operating parameters of the cooling system without the need for modifications.

Technical support and part selection

When selecting a cooling hose for a specific body and engine version, it is worth using the manufacturer's markings and vehicle data to avoid installation errors. In case of doubts regarding overheating symptoms or proper cooling system diagnostics, the following guide will be helpful: Engine cooling system – overheating, repair, and used radiators, which discusses the impact of cooling circuit efficiency on the lifespan of the power unit.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mercedes and need other components from the same group, such as additional hoses, return lines, or connecting sections to the reservoir, check the available parts in the Mercedes cooling system hoses and pipes category.