Mercedes W205 W253 C63 Water Coolant Pipe Hose Line M177 A1770940782

Mercedes W205 W253 C63 Water Coolant Pipe Hose Line M177 is an original cooling system component designed for gasoline engines, specifically engineered for the demanding M177 engine versions. Thanks to its factory-spec geometry and precise fitment for the specific engine bay architecture, it ensures stable coolant flow and a secure connection with other system components. This used OEM part is a sensible choice for drivers who want to maintain structural integrity and optimal cooling system performance in their Mercedes.

Specifications and technical data

• SKU: A1770940782
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1770940782
• Substitutable numbers: A1770940782, A 177 094 07 82
• Fuel type: Petrol
• Part type: Hose
• Category: Coolant Hoses

Purpose and role in the cooling system

The coolant pipe in the M177 engine is responsible for the precise routing of coolant between key components of the powertrain. In vehicles from the W205 and W253 families, as well as C63 versions, this is of particular importance because the gasoline engine generates high thermal loads, and the cooling system must maintain a stable operating temperature across a wide range of loads.

A properly selected hose from the Cooling system pipes and hoses category minimizes the risk of localized overheating, leaks, and pressure drops in the fluid circuit. In practice, this translates into:

• maintaining the correct operating temperature of the gasoline engine,
• reducing the risk of damage to gaskets and aluminum components,
• stable operation of accessories integrated with the cooling system.

Construction and fitment for the M177 unit

The coolant pipe in this configuration is designed for specific routing within the engine bay, taking into account the densely packed accessories of the M177 unit. Its appropriate rigidity and shape ensure:

• collision-free routing relative to manifolds, turbochargers, and auxiliary equipment,
• proper positioning at factory mounting points,
• maintenance of flow cross-section under thermal load.

As a result, installation is predictable, and the pipe performs according to the vehicle manufacturer's specifications after installation, which is particularly important in high-performance cars.

Benefits of using an original coolant pipe

Using an original coolant pipe in a Mercedes with a gasoline engine allows you to maintain the factory operating parameters of the system. Compared to aftermarket replacements, the OEM part offers:

• material consistency with other cooling system components,
• predictable behavior under temperature and pressure,
• compatibility with factory connectors and clamps.

A used part of this class is a good solution for servicing vehicles driven dynamically, where both proper cooling and maintaining the original engine performance characteristics are essential.

Condition, verification, and service application

The product comes from disassembly and is intended for reinstallation in Mercedes vehicles equipped with an M177 family gasoline engine. Before installation, a standard visual inspection and a check for connection tightness after installation in the vehicle are recommended. This type of pipe is particularly useful for:

• repairs following cooling system component failure,
• preventive maintenance in high-mileage vehicles,
• restoring factory configuration in modified cars.

Expanding the cooling system in your Mercedes

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

To better understand how thermal conditions affect the durability of hoses and the entire fluid circuit, it is worth checking out our guide on operating the cooling system in high temperatures: Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

If you are interested in a broader context regarding the selection of used OEM components for popular car models, our aftermarket guide may also be helpful: The best used car parts – a guide to the most frequently chosen original parts.