Coolant Hose Mercedes W447 OM622 Radiator Engine Water Cooling Line A4475013182

Mercedes W447 OM622 Radiator Hose – Engine Cooling Hose is a cooling system component designed for diesel engines, specifically engineered for the OM622 engine's construction requirements. It is responsible for the stable flow of coolant between system components, which helps maintain the correct operating temperature of the diesel engine and reduces the risk of overheating. Thanks to its precise geometry and factory specifications, it is the right choice for cooling system repairs in Mercedes W447 vans.

Specifications and technical data

• SKU: A4478302302
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4478302302
• Substitutable numbers: A4478302302, A 447 830 23 02, A4475013182
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and Function in the Cooling System

The presented hose belongs to the Cooling System Hoses and Pipes group and operates within the coolant circuit of a diesel engine. In the OM622 diesel engine, it is responsible for directing the fluid flow between the radiator and engine components, which allows for:

• maintaining the stable operating temperature of the powertrain,
• protecting the cylinder head and block from localized overheating,
• ensuring proper cooperation with the thermostat and radiator,
• reducing the risk of decreased interior heating performance.

A properly selected radiator hose is crucial for the durability of a diesel engine, especially in commercial vehicles that often operate under load and in varying thermal conditions.

Compatibility with OM622 Diesel Engine

The hose has been designed with the specific architecture of the OM622 unit used in the Mercedes W447 in mind, meaning it fits the spigots, routing in the engine bay, and characteristic mounting points. This ensures:

• minimal stress on the radiator and engine spigots,
• proper positioning relative to other components,
• reduced risk of chafing and leaks during operation.

Its dedication to diesel engines translates to resistance to higher thermal and pressure loads typical for these types of powertrains.

Characteristics of a Used Part

The offered radiator hose is a used part, sourced from disassembly, which allows you to combine the functionality of an original solution with an attractive price. This type of component is a good choice when:

• you are looking for a factory-fitted hose for a specific Mercedes model,
• you want to reduce the cost of cooling system repairs,
• you want to maintain the original hose routing geometry.

Before installation, a standard check of tightness, rubber flexibility, and spigot condition is recommended to ensure the cooling system operates stably and without leaks after replacement.

Importance of a Proper Radiator Hose for Engine Durability

A functional cooling hose in a diesel engine directly impacts the powertrain's lifespan. A leaky or deformed hose can lead to fluid loss, overheating, and consequently, costly repairs to the cylinder head or the entire engine. A correctly selected part:

• stabilizes the cooling system's operation across a wide range of loads,
• supports uniform heat dissipation from the engine,
• reduces the risk of failure in intensive fleet operation.

If you want to better understand how the cooling system affects the powertrain's condition and what symptoms indicate overheating problems, it is worth reading the guide: Engine Cooling System – Overheating, Repair, and Used Radiators.

Expanding the Cooling System in a Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional pipes, return hoses, or sections connecting the radiator to the engine, check the available parts in the category Mercedes Cooling System Hoses and Pipes.