Heater Line Mercedes W204 C207 W212 Petrol OM271 Coolant Hose A2128301696

The Mercedes W204 C207 W212 Gasoline OM271 Heater Water Hose is an original cooling system component designed for gasoline engines, responsible for the efficient flow of coolant between the engine and the heater core. Thanks to its factory geometry and connector diameters, it ensures a proper fit for installation in Mercedes C-Class, E-Class, and coupé models. It's a practical choice for drivers looking for a proven cooling system hose instead of universal aftermarket parts.

Specifications and technical data

• SKU: A2128301696
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2128301696
• Substitutable numbers: A2128301696, A 212 830 16 96
• Fuel type: Petrol
• Category: Coolant Hoses

Purpose and Role in the Cooling System

The presented hose belongs to the category of Mercedes Cooling System Hoses and Pipes and works with the OM271 gasoline engine. It is responsible for transporting coolant to the heater core, which directly impacts:

• stable operating temperature of the gasoline engine,
• efficiency of cabin heating,
• dissipation of excess heat from the engine block.

A correctly selected heater hose minimizes the risk of overheating, air in the system, and leaks at critical points of the installation.

Construction, Fit, and Installation

The hose is designed as a dedicated component for specific Mercedes models, which translates to proper routing in the engine bay and compatibility with the heater core and cooling system connectors. The hose's construction includes:

• a shape tailored for installation in Mercedes W204, C207, and W212,
• appropriate flexibility allowing for installation without excessive stress,
• suitability for use with coolants used in gasoline engines.

Thanks to its factory design, installation is straightforward, without the need for modifications or additional adapters. This solution is beneficial for both workshops and users who service their cars themselves.

Benefits of Using an Original Heater Hose

Using a dedicated hose in the cooling system offers a range of practical advantages:

• Stable Cooling System Operation – proper coolant flow minimizes engine temperature fluctuations.
• Better Heater Core Cooperation – efficient coolant circulation translates to effective interior heating of the vehicle.
• Reduced Leakage Risk – matched diameters and shape reduce stress on clamps and connectors.
• Easier Diagnostics – an original part facilitates future assessment of the cooling system's condition.

This is particularly important in gasoline-powered cars, where maintaining the correct operating temperature affects engine smoothness, fuel consumption, and component durability.

Condition, Practical Application, and Service Tips

The offered heater hose is a used part, making it an attractive option for drivers seeking a cost-effective solution while maintaining original specifications. It is suitable for both scheduled replacement of worn hoses and for repairs after a cooling system failure.

During installation, pay attention to:

• checking the condition of hose clamps and connectors,
• proper bleeding of the system after filling with fresh coolant,
• regular leak checks after the first engine heating cycles.

For a more comprehensive understanding of the entire system's operation, refer to the guide on the impact of temperatures on engine cooling: Summer Heat vs. Cooling System – How Used Parts Help in Economical Operation.

Other Mercedes Cooling System Hoses and Pipes

If you are also looking for other Mercedes cooling system hoses and pipes suitable for your model, check out our dedicated offer: Mercedes cooling system hoses and pipes. This will allow you to easily assemble a complete set of components responsible for coolant circulation in your car.