Water Hose Mercedes W169 W245 M266 Petrol Heater Coolant Pipe Line A1698302796

Water Hose Mercedes W169 W245 M266 Petrol Heater Coolant Pipe Line for petrol engines is a component responsible for the stable flow of coolant between the heater core and other system components. Thanks to its factory-spec geometry and precise fit for the petrol engine platform, it ensures proper coolant circulation and predictable performance of the heating and cooling system during daily operation. This is a practical solution for users looking for an original Mercedes component on a reasonable budget.

Specifications and technical data

• SKU: rhd-A1698302796
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1698302796
• Substitutable numbers: A1698302796, A 169 830 27 96
• Fuel type: Petrol
• Category: Coolant Hoses

Application and function in the cooling system

The offered water hose is part of the Cooling system hoses and pipes group, designed for Mercedes A-Class and B-Class W169 / W245 models with petrol engines. It is responsible for transporting coolant in the heater area, which directly impacts engine temperature stability and cabin heating efficiency.

A properly selected hose in this area allows you to:

• maintain the correct pressure and flow of coolant in the auxiliary circuit,
• minimize the risk of localized overheating near the heater core,
• ensure predictable operation of the interior heating system under various engine loads.

Benefits of using an original Mercedes hose

Choosing an original water hose from dismantling means maintaining factory geometry, connection diameters, and wall rigidity, which is crucial for the tightness and durability of the connections. Original Mercedes components are designed for long-term operation at high temperatures and under variable pressure, making them work better with other cooling system elements than random aftermarket replacements.

By using this hose in your petrol engine's cooling system, you gain:

• compatibility with factory connectors and mounts in the engine bay,
• stable coolant flow under typical road loads,
• reduced risk of leaks resulting from mismatched diameters or hose shapes.

Component condition and installation aspects

The hose is offered as a used part, which allows for lower repair costs while maintaining the manufacturer's original specifications. This type of component is particularly attractive for servicing older Mercedes W169 / W245 vehicles, where a reasonable balance between price and compliance with the factory design is important.

Before installation, standard service procedures are recommended: checking the connection surfaces, verifying the condition of the clamps, and bleeding the cooling system after refilling with fresh coolant. A properly installed hose supports stable engine operating temperature and reduces the risk of failures related to coolant loss.

Technical support and cooling system knowledge

When replacing hoses and pipes in the cooling system, it is worth analyzing the entire installation – from the radiator and heater core to the connectors and expansion tank. For users who want to better understand the impact of individual components on engine durability, the following article describing common overheating problems and the importance of an efficient coolant circuit will be helpful: Engine cooling system – overheating, repair, and used radiators.

If you are considering whether it is better to refurbish or purchase a used original part for this type of component, it is worth reading the analysis of the advantages and limitations of both solutions: refurbished or used original – which part to choose for repairs.

Related Mercedes cooling system components

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 hoses, return lines, or sections connecting to the radiator, check out the available parts in the Mercedes cooling system hoses and pipes category.