Bleed Line Mercedes W447 Diesel Coolant Hose Radiator Expansion Tank A4475010525

Bleed Line Mercedes W447 Diesel Coolant Hose Radiator Expansion Tank is an original component from the Cooling system pipes and hoses group, connecting the radiator to the expansion tank. Designed specifically for Diesel units, it ensures stable coolant flow and proper system venting, which translates into safe engine operation across a wide temperature range.

Specifications and technical data

• SKU: A4475010525-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4475010525
• Substitutable numbers: A4475010525, A 447 501 05 25
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered bleed line is a cooling system component responsible for venting excess air and stabilizing the fluid level between the radiator and the expansion tank. In Mercedes W447 vehicles with a diesel engine, a properly functioning hose of this type helps maintain the optimal operating temperature of the power unit, reduces the risk of overheating, and supports uniform fluid circulation throughout the entire circuit.

Construction and fitment for Mercedes W447 Diesel

The hose has been designed as a component dedicated to the Mercedes W447 platform powered by Diesel, which ensures proper routing in the engine bay and a perfect fit for the factory radiator and expansion tank connectors. The appropriately shaped geometry of the hose minimizes stress, friction against adjacent components, and the risk of kinks that could restrict fluid or air flow.

Characteristics of the used component

The item comes from dismantling, making it a cost-effective solution while maintaining the original manufacturer's specifications. A used cooling system hose is a good solution in situations where the existing hose has suffered mechanical damage, cracking, or shows signs of material wear, and you want to maintain the factory flow characteristics and installation standards.

Benefits of using an original bleed line

Using an original bleed line in a diesel engine cooling system provides a number of practical benefits:

• maintaining the factory routing of the hose in the engine bay,
• proper venting of the cooling circuit,
• stable fluid flow between the radiator and the expansion tank,
• reducing the risk of engine overheating,
• easier diagnostics and service due to compliance with manufacturer documentation.

Technical support and knowledge about the cooling system

If you want to better understand how high ambient temperatures affect the operation of the cooling system in your car and why efficient hoses, radiators, and fans are so important for engine protection, check out our guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. This is a practical addition to your knowledge when planning maintenance and repairs in the cooling zone.

Expanding the cooling system in Mercedes

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