Mercedes W164 W203 C207 Coolant Water Pump Diesel Engine A6422001701

Mercedes W164 W203 C207 Coolant Water Pump Diesel Engine is an original cooling system component designed for Mercedes diesel engines, engineered to ensure stable heat dissipation from the power unit. Thanks to its precise construction and fitment for specific model ranges, it ensures efficient coolant circulation and safe engine operating conditions during daily use.

Specifications and technical data

• SKU: A6422001701
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6422001701
• Substitutable numbers: A6422001701, A 642 200 17 01, A 6422002201, A 642 200 22 01, A6422001301, A 642 200 13 01
• Fuel type: Diesel
• Category: Water Pumps

Purpose and role in the cooling system

The presented water pump belongs to the Water pumps category and is dedicated to diesel engines used in selected Mercedes W164, W203, and C207 class models. It is responsible for forcing the circulation of coolant between the engine block, cylinder head, and heat exchanger, which allows for maintaining an optimal operating temperature even under heavy loads.

In diesel engines, which operate under higher pressure and generate significant amounts of heat, an efficient water pump is crucial for protection against overheating, component deformation, and a decrease in engine durability. Using a component structurally matched to specific Mercedes engine series limits the risk of leaks and assembly issues.

Construction and fitment for Diesel engines

The pump has been designed to meet the requirements of diesel engines, where maintaining a stable temperature during prolonged operation under load is essential. The body geometry and the arrangement of connection ports are adapted to the factory cooling hose layout in Mercedes vehicles from the W164, W203, and C207 families, which facilitates installation in place of the old component.

Properly selected bearings and internal sealing of the pump support smooth rotor operation, minimizing the risk of coolant leaks and unwanted play. As a result, the component can effectively work with other cooling system parts, such as the radiator, thermostat, or flexible hoses.

Benefits of using an original Mercedes pump

Using an original water pump in a Mercedes diesel engine translates into a number of practical benefits:

• preservation of the factory cooling characteristics of the power unit,
• reliable fitment to mounts and hose layouts in the engine bay,
• reduction of overheating risk in both urban and highway conditions,
• consistency with other cooling system elements designed by the manufacturer.

For the user, this means more predictable vehicle behavior, a lower risk of thermal failures, and easier diagnostics in the event of any malfunctions. Choosing a component consistent with factory design assumptions is particularly important in modern diesel units, where stable engine operating temperature also affects performance and fuel consumption.

Characteristics of the used product

The offered water pump is a used component, which allows for an economical repair of the cooling system while maintaining the manufacturer's original specifications. This type of solution is often chosen when servicing older generations of vehicles, where both technical compatibility and reasonable operating costs are important.

Before installation, a standard service procedure is recommended: checking the condition of seals, verifying operating clearances, and assessing the contact surface with the engine block. Properly performed installation, using appropriate sealing agents and in accordance with service documentation, increases the chance of long-term and stable operation of the entire cooling system.

Selection, diagnostics, and technical knowledge

When selecting a water pump for a specific Mercedes vehicle, it is worth using the manufacturer's markings and vehicle data to ensure full compatibility with the given diesel engine version. In case of doubt, it is helpful to compare the construction of the old element with the offered pump in terms of the arrangement of mounts and ports.

For users interested in deepening their knowledge about the operation of supply systems and related components, an article describing the principles of operation, diagnostics, and part selection by identification numbers may be useful – details can be found in the material Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which organizes many issues related to the service of modern diesel units.

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 additional pumps, housings, or mounting elements, check the available parts in the Mercedes Water pumps category.