Mercedes W204 W211 Heater Water Coolant Control Unit Valve Petrol A2722000031

Mercedes W204 W211 Heater Water Coolant Control Unit Valve is an original cooling and heating system component designed for Mercedes vehicles with petrol engines. This modular water valve is responsible for precise control of coolant flow, which ensures a stable engine operating temperature and efficient cabin heater performance. This used OEM component is a sensible choice for drivers looking for a technically matched solution at an attractive price.

Specifications and technical data

• SKU: A2722000031
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2722000031
• Substitutable numbers: A2722000031, A 272 200 00 31
• Fuel type: Petrol
• Category: Heater Control Valve

Function and application in the cooling system

The water valve in the form of a cooling module plays a key role in managing fluid circulation in a petrol engine. It is responsible for:

• controlling the flow of fluid between the engine and the heater core,
• stabilizing the operating temperature of the power unit,
• cooperating with the interior heating control system,
• reducing the risk of overheating in both city and highway driving conditions.

Thanks to the proper operation of the cooling module, the heating system reacts predictably, and the engine maintains thermal parameters in accordance with the manufacturer's specifications, which promotes durability and operational efficiency.

Benefits of using an original module in a Mercedes

The original water valve dedicated to the W204 and W211 series ensures factory-fit installation and compatibility with the vehicle's control electronics. In practice, this means:

• proper cooperation with temperature sensors and the climate control unit,
• correctly sized flow channel cross-sections,
• maintenance of the valve opening and closing characteristics specified by the manufacturer,
• reduction of the risk of diagnostic errors resulting from the use of aftermarket replacements with different characteristics.

For petrol engines, a stable operating temperature is particularly important, which is why the dedicated cooling module is a safe solution for heating and cooling system repairs.

Product characteristics and condition

The presented item belongs to the Heater Control Valves category and is intended for petrol-powered vehicles. The product is used, which allows you to combine original quality with a cost-effective purchase. This type of component is particularly useful for:

• cabin heating system repairs,
• resolving issues with unstable air temperature,
• diagnosing improper coolant circulation in the auxiliary circuit.

Choosing a used OEM module is often preferred by workshops specializing in Mercedes vehicles, as it maintains structural compatibility with the vehicle's factory system.

Selection support and technical knowledge expansion

When selecting a water valve for a specific body and engine version, it is worth paying attention to compatibility with the heating system and fuel type. Comparing the OEM part number or interchangeable numbers with the vehicle's specifications can be helpful, minimizing the risk of purchasing an incorrect item. For those interested in a broader context of valve operation and exhaust gas recirculation systems, the article describing the EGR system and the advantages of using aftermarket components will be useful: EGR: what is it and why consider used EGR valves.

If you are planning a comprehensive repair or upgrade of the heating and cooling area in your Mercedes and need other elements from the same group, such as additional flow control modules, fluid distributors, or auxiliary valves, check out the available parts in the Mercedes Heater Control Valves category.

If you are considering whether a new or used part is a better choice in your case, comparing the costs and durability of different solutions described in the article may be helpful: New or used? Comparing the costs and quality of car parts. This will make it easier for you to assess how to optimally plan the repair of your vehicle's cooling system.