Water Hose Mercedes W177 W247 Heat Exchanger Coolant Return Pipe A2478306300

Mercedes W177 W247 Water Hose Pipe A2478306300 is an original part from the Cooling System Hoses and Pipes category, designed for use in modern compact Mercedes models of the W177 and W247 series. A used OEM water pipe ensures a factory fit for the cooling system, stable coolant flow, and maintenance of designed engine operating parameters. This is a practical solution for drivers who want to maintain the efficiency of their cooling system at controlled service costs.

Specifications and technical data

• SKU: A2478306300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2478306300
• Substitutable numbers: A2478306300, A 247 830 63 00, KD
• Category: Coolant Hoses

Purpose and Role in the Cooling System

The presented water hose is a component of the cooling system responsible for transporting coolant between engine components and the radiator. In Mercedes W177 and W247 vehicles, a correctly selected water pipe is crucial for:

• maintaining stable engine operating temperature,
• preventing localized overheating and performance drops,
• maintaining the seal of the entire cooling circuit.

Thanks to its construction in line with factory Mercedes standards, the pipe maintains its proper shape under thermal and mechanical load, which reduces the risk of abrasion, kinks, and leaks.

Why Choose an Original Mercedes Water Pipe

Choosing an original Mercedes water pipe over an aftermarket alternative translates into a number of practical service and operational benefits:

• Factory Geometric Fit – correct length, diameters, and routing of the pipe in accordance with the manufacturer's design.
• Compatibility with Accessories – proper positioning relative to connectors, clamps, and adjacent engine bay components.
• Stable Cooling System Operation – the pipe is designed to operate within the typical temperature and pressure ranges for units used in the W177 and W247.
• Reduced Risk of Failure – lower probability of leaks compared to random aftermarket replacements of uncertain origin.

A used OEM part is a sensible compromise between quality and cost, especially for preventative maintenance or restoring functionality after a cooling system failure.

Condition, Verification, and Preparation for Installation

The water pipe is a used original part from disassembly. This type of part, before being offered, is routinely inspected for:

• material integrity along its entire length,
• absence of cracks, delamination, and visible mechanical damage,
• condition of connection spigots and areas for hose clamps.

A pipe prepared in this way is suitable for installation as a replacement for a worn or damaged component in the existing cooling system, without the need for installation modifications.

Cooling System Operation and Service Knowledge

To maximize the potential of a functional water pipe, it's important to care for the entire cooling system – regular fluid changes, inspection of the radiator, thermostat, and fans. Practical tips on cooling system operation in high temperatures and the cost-effectiveness of using used components can be found in the guide “Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings”. This is a useful addition to your knowledge when planning comprehensive servicing.

Other Mercedes Cooling System Hoses and Pipes

If you are also looking for other parts from the Cooling System Hoses and Pipes category for your Mercedes, check out our dedicated offer – you will find a wide selection of OEM and used components, tailored to various models of this brand: Mercedes cooling system hoses and pipes.

Summary

Mercedes W177 W247 Water Hose Pipe A2478306300 is a practical choice for users who want to restore full cooling system functionality while maintaining factory manufacturer standards. Its original origin, fit for specific models, and favorable price-to-quality ratio make this pipe a solid basis for professional repair or preventative replacement in modern Mercedes compacts.