Mercedes W177 W247 Heater Water Cooling Coolant Pipe Hose Line A2478307600

Mercedes W177 W247 Heater Water Cooling Coolant Pipe Hose Line is an original component from the Cooling system pipes and hoses group, designed to operate within the coolant circuit and work in conjunction with the heater core. The design, tailored to the specific routing of the installation in the engine bay of Mercedes compact models, ensures stable fluid flow and proper heat dissipation from the power unit. This solution allows for maintaining the factory geometry of the system and reduces the risk of leaks resulting from the use of aftermarket replacements with different shapes.

Specifications and technical data

• SKU: A2478307600
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2478307600
• Substitutable numbers: A2478307600, A 247 830 76 00
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered pipe is designed to operate in the coolant circuit between the cooling system components and the heater core in Mercedes compact class vehicles. It is responsible for:

• stable routing of the coolant flow towards the heater core and back,
• maintaining connection tightness under varying temperature and operating pressure conditions,
• preserving proper fluid circulation, which translates into interior heating efficiency and protection of the engine against overheating.

Thanks to the factory fit, the pipe works with original connectors and clamps, which facilitates installation and reduces the need for additional modifications in the engine bay.

Benefits of using an original Mercedes pipe

Using an original pipe in the cooling system brings a number of practical service and operational benefits:

• Factory geometry – shape and length selected for a specific vehicle platform minimize stress on connectors and joints.
• Stable cooling system operation – proper coolant flow supports maintaining optimal engine temperature and heater efficiency.
• Better integration with other system elements – the pipe is part of the manufacturer's coherent design concept.
• Easier diagnostics – by maintaining the original routing of the pipes, it is easier to locate potential leaks or air pockets in the system.

Product characteristics and service application

The cooling system pipe for Mercedes W177 and W247 models is an OEM component, which means compliance with the manufacturer's factory standards regarding fit and purpose. It is suitable both for typical replacement of a worn section of the installation and for major service work related to the cooling system, such as:

• replacement of the heater core or fluid flow control elements,
• repairs after coolant leaks in the bulkhead and engine bay area,
• preventive cooling system inspections after engine overheating.

By maintaining the original pipe routing concept, it is possible to keep a clear layout in the engine bay, which facilitates subsequent service work and visual inspections.

Component condition and installation aspects

The offered pipe comes from the group of used Mercedes parts, which allows for economical repair while maintaining the original design specification. Before installation, a standard service procedure is recommended, including checking the connection surfaces, selecting appropriate clamps, and properly bleeding the cooling system after refilling with fresh fluid. Such an approach promotes trouble-free operation and reduces the risk of repeated interventions in a short time.

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

Expert support and cost optimization

When working with the cooling system, it is worth considering the impact of high temperatures on the durability of pipes, connectors, and other components. Practical tips on operation and selection of elements can be found in our guide "Summer heat vs. cooling system: used radiators and fans as a guarantee of savings", which helps to better plan service and reduce repair costs.

If you care about efficiently restoring the full functionality of the vehicle and using readily available OEM elements, additional information on the impact of parts availability on repair time is provided in the article on the role of used original parts in shortening the car's stay in the workshop.