Water Pump Mercedes W203 M271 Petrol Engine Coolant Flange A2712001256

Water Pump Mercedes W203 M271 Petrol Engine Coolant Flange is a precision cooling system component designed for installation in the front section of vehicles equipped with M271 series petrol engines. This used component from the Water pumps category allows for a technical, cost-effective, and safe repair of the cooling system in Mercedes vehicles, while maintaining the factory coolant flow geometry.

Specifications and technical data

• SKU: A2712001256
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2712001256
• Substitutable numbers: A2712001256, A 271 200 12 56
• Location on the vehicle: Front
• Fuel type: Petrol
• Category: Water Pumps

Purpose and function of the coolant flange

Water Pump Mercedes W203 M271 Petrol Engine Coolant Flange operates in the front area of the engine bay, where it is responsible for directing the flow of coolant between cooling system components. A correctly selected flange ensures stable thermal conditions for the power unit, which translates into the longevity of the petrol engine and the proper operation of auxiliary equipment.

This element works in conjunction with the coolant pump, hoses, and cooling system housings, creating a tight connection resistant to thermal stress. By maintaining the original connection geometry, the risk of leaks, overheating, and improper fluid circulation is minimized.

Benefits of using an original Mercedes component

Choosing a coolant flange from the Mercedes group means matching factory assembly standards and petrol engine operating parameters. The original design ensures:

• correct positioning in the front part of the vehicle,
• compatibility with the existing cooling system,
• maintenance of the coolant flow cross-section designed by the manufacturer.

As a result, the installation process is predictable, without the need for hose modifications or additional adapters, which is important for both workshops and users who care about the technical correctness of the repair.

Condition of the component and application in petrol engines

The offered coolant flange is a used part, which allows for reduced service costs while maintaining the original assembly specification. This is a practical solution for maintenance repairs when the factory flange has been damaged, e.g., as a result of material aging or local thermal overloads.

The design adapted to M271 petrol engines ensures compatibility with the thermal characteristics of this unit, and its location in the front of the vehicle facilitates service access and inspection for potential leaks after installation.

Application in the cooling system and selection based on technical data

The coolant flange operates in the immediate vicinity of the coolant pump, radiator, and flexible hoses, which is why maintaining the correct shape and diameter of the connections is crucial. Proper selection based on the OEM number and interchangeable numbers, presented in the specification section, allows for avoiding compatibility issues and ensures proper sealing of connections.

For users and workshops, this means the ability to quickly identify parts, reduce the risk of selecting the wrong component, and efficiently restore the full functionality of the cooling system in a Mercedes W203 with an M271 unit.

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 housings, bodies, or coolant connections, check the available parts in the Mercedes Water pumps category.

Technical support and knowledge about fuel systems

When performing service work within the engine bay, it is worth simultaneously taking care of the efficiency of the fuel supply system. Detailed information on diagnostics, selection based on OEM numbers, and operating principles for fuel system components can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which provides a practical supplement to knowledge for comprehensive service work.