Mercedes-Benz C-Class W203 M271 Petrol Engine Coolant Flange A2712001156

Mercedes-Benz C-Class W203 M271 Petrol Engine Coolant Flange is a precision cooling system component designed for installation in the front section of vehicles equipped with a petrol engine. It is responsible for the stable routing of coolant and a leak-proof connection of hoses, which is crucial for the trouble-free operation of the powertrain. By maintaining the factory geometry, the flange ensures proper coolant circulation and correct interaction with other system components.

Specifications and technical data

• SKU: A2712001156
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2712001156
• Substitutable numbers: A2712001156, A 271 200 11 56
• Location on the vehicle: Front
• Fuel type: Petrol
• Category: Water Pumps

Purpose and function of the coolant flange

The presented flange is a cooling system component for Mercedes-Benz C-Class W203 models equipped with the M271 petrol engine. Mounted in the front of the vehicle, it is responsible for the directional flow of coolant between the engine block and other sub-assemblies, such as flexible hoses or the water pump housing. Stable mounting and properly shaped flow channels help maintain the correct operating temperature of the powertrain, which translates into its durability and smooth operation.

Compatibility and fitment for the cooling system

The flange has been designed to maintain factory fitment for the cooling system in Mercedes vehicles with the M271 petrol engine. The appropriate geometry of the connections allows for correct hose seating and interaction with components from the Water pumps group, without the need for system modifications. As a result, installation is predictable, and the risk of leaks resulting from poor fitment is minimized.

Performance characteristics of the used component

The offered coolant flange comes from dismantling, meaning it is a used part that retains the manufacturer's original design. Such components are frequently chosen for cooling system maintenance when the goal is to preserve factory flow parameters and connection shapes. A used component allows for an economical repair while maintaining compliance with the solutions applied by the vehicle manufacturer.

Benefits of using the correct coolant flange

Selecting the right coolant flange for the M271 petrol engine has a direct impact on:

• engine operating temperature stability thanks to the correct direction of coolant flow,
• reducing the risk of leaks through proper matching of the flange diameters and shape to the hoses,
• maintaining correct interaction with the water pump and other cooling system components,
• preserving the factory configuration of the system in the engine bay, without the need for modifications.

Expanding cooling system service and related sub-assemblies

When replacing the coolant flange, it is worth considering a comprehensive inspection of the entire cooling area in the front of the vehicle, including the condition of hoses, clamps, and cooperating elements from the Water pumps group. This approach helps reduce the number of service downtimes and lowers the risk of subsequent leaks shortly after the repair.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as housings, impellers, or seals cooperating with coolant, check the available parts in the Mercedes Water pumps category.

Part selection by numbers and vehicle system diagnostics

When working with cooling system components and petrol engine supply systems, it is essential to correctly match parts based on catalog numbers and compatibility with the specific engine version. Proper part identification minimizes the risk of assembly and operational issues and facilitates the planning of further service work within the engine and its accessories.

To better understand the relationships between the fuel system and engine operation, and to learn practical tips on selecting components by OEM numbers, it is worth reading the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses diagnostics, selection, and operation of key sub-assemblies.