Engine Water Pump Mercedes W204 W212 W221 W251 Coolant Water Unit A2762000401

Mercedes W204 W212 W221 W251 Water Pump is an original part from the Water Pumps group, designed for use in popular Mercedes models. The used pump offers a functional service solution for vehicles requiring replacement of the factory cooling system component, while maintaining proper engine operating characteristics.

Specifications and technical data

• SKU: A2762000401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2762000401
• Substitutable numbers: A2762000401, A 276 200 04 01
• Category: Water Pumps

Purpose and Role in the Cooling System

The presented water pump is designed to work with the powertrains used in Mercedes C-Class, E-Class, S-Class, and R-Class models of the W204, W212, W221, and W251 generations. It is responsible for the forced circulation of coolant, which helps maintain stable engine operating temperature, reduces the risk of overheating, and ensures proper lubrication and combustion conditions.

Thanks to its construction compliant with manufacturer standards, the pump integrates seamlessly with the factory engine equipment, maintaining correct fluid flow and pressure parameters. This is particularly important in premium vehicles where precise temperature control affects the smoothness of the powertrain's operation and the longevity of other components.

Benefits of Using an Original Mercedes Water Pump

Replacing a worn-out component with an original water pump restores proper coolant circulation without the need for system modifications. In practice, this means:

• maintaining the engine's factory cooling characteristics,
• correct interaction with the drive belt and other accessories,
• reduced risk of leaks and cooling system performance degradation,
• improved thermal stability in urban and highway conditions.

For the user, this translates to more predictable vehicle behavior, reduced thermal load on the engine, and the ability to continue operating the car with parameters close to factory specifications. Choosing an original part from the Water Pumps group is especially beneficial for vehicles used intensively or with higher mileage.

Product Characteristics and Service Application

This water pump is intended as a replacement part for the cooling system in selected Mercedes models. It can be used for standard maintenance replacements as well as part of a broader range of service work involving the cooling system, such as replacing the radiator, hoses, or thermostat.

The used nature of the component allows for economical repairs while maintaining the original manufacturer's specifications. This solution is particularly attractive for users who want to combine cost control for servicing with compatibility with the factory powertrain.

Installation Recommendations and Part Selection

Before installation, it is recommended to perform a standard verification of the pump's compatibility with the specific engine version of the vehicle and to check the condition of cooperating components such as the drive belt, idler pulleys, and coolant hoses. Correct part selection based on manufacturer codes and vehicle parameters will prevent fitting issues and ensure proper system operation after installation.

If you have any doubts regarding part selection, it is advisable to consult the vehicle manufacturer's designations or seek advice from a service center specializing in the Mercedes brand to ensure full consistency of the installed components.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as pump housings, impellers, or drive covers, check the available parts in the Mercedes Water Pumps category.

To better plan service work on fuel and cooling systems, a guide describing diagnostics and part selection by manufacturer codes might be helpful – detailed information can be found in the article “Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair”, which covers many practical aspects related to the operation of components in modern cars.