Water Hose Mercedes W169 W245 M266 Petrol Heater Coolant Pipe Line A1698302896

Heater hose for Mercedes W169 and W245 with petrol engine is an original cooling system component responsible for the stable flow of coolant between the engine and the heater. Thanks to its factory geometry and fit for petrol units, it ensures proper circulation of the working medium, which translates into efficient interior heating and uniform heat dissipation from the engine.

Specifications and technical data

• SKU: rhd-A1698302896
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1698302896
• Substitutable numbers: A1698302896, A 169 830 28 96
• Fuel type: Petrol
• Category: Coolant Hoses

Function in the cooling and heating system

The heater hose in Mercedes A-Class W169 and B-Class W245 models with petrol engines operates within the coolant circuit, connecting the engine area to the heater heat exchanger. It is responsible for:

• transporting coolant under the correct pressure and in the required direction,
• maintaining the circuit's seal in the heater zone,
• stabilizing flow under variable engine temperature and load conditions,
• cooperation with other elements from the Cooling System Hoses and Pipes group.

A properly selected hose reduces the risk of engine overheating and cabin heating problems, which is important for both comfort and engine durability.

Compatibility with petrol engines

The component is designed to work with the cooling system of petrol engines used in Mercedes W169 and W245. This means the diameters of the connectors, the hose routing, and the mounting points are adapted to the factory layout of components in the engine bay. Thanks to this:

• installation is predictable, without the need for modifications,
• the correct hose routing is maintained, minimizing stress and vibration,
• the cooling system maintains parameters close to factory settings, promoting stable heater operation.

Choosing a hose dedicated to a specific generation and fuel type helps avoid leaks and improper routing in the engine bay.

Characteristics of the used part

The offered hose is a used part, allowing for economical repair of the cooling system while maintaining its original design. This type of component is particularly beneficial for:

• routine repairs after cracking or delamination of the old hose,
• restoring the original routing of the cooling system after previous modifications,
• optimizing service costs while maintaining original geometry and mountings.

A used heater hose represents a reasonable compromise between cost and adherence to the original cooling system design.

Technical support and further information on cooling

For drivers who want to better understand the impact of engine operating temperature on component durability, especially during the summer season, we have prepared a practical guide. You will learn how high temperatures affect the cooling system and how used components can help with rational servicing. Check out the article: Summer heat vs. cooling system: used radiators and fans guarantee savings.

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, flexible pipes, or coolant pipes, check the available parts in the Mercedes Cooling System Hoses and Pipes category.