Mercedes Vito Viano W639 Water Heater Valve Pump Motor A0028353564

Mercedes Vito Viano W639 Water Heater Valve Pump Motor is an original component from the Water pumps group, designed for the cooling system in Mercedes vehicles. This used OEM part ensures a factory-fit for the power unit, which facilitates installation and helps maintain the correct engine operating parameters.

Specifications and technical data

• SKU: A0028353564
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0028353564
• Substitutable numbers: A0028353564, A 002 835 35 64, KD
• Category: Water Pumps

Purpose and role in the cooling system

The Mercedes Vito Viano W639 Water Heater Valve Pump Motor is responsible for the forced circulation of coolant between the engine and the radiator. It stabilizes the operating temperature of the power unit, reduces the risk of overheating, and supports uniform heat dissipation from the block and cylinder head. Thanks to the preservation of the factory geometry of the housing and impeller, it works with original hoses, the thermostat, and the radiator without the need for system modifications.

Construction and fitment for Mercedes Vito / Viano W639

The pump has been designed specifically for the W639 platform, which translates into precise alignment with the engine block mounts and correct positioning relative to the drive belt. Properly selected connection diameters facilitate the installation of standard coolant hoses, and the correct impeller rotation direction ensures efficient medium circulation throughout the entire system.

The original origin from the Mercedes brand means maintaining the vehicle manufacturer's quality standards, including resistance to thermal and mechanical loads typical for the operation of Vito commercial models and Viano passenger vehicles.

Identification parameters and compatibility

The element has a dedicated OEM part number, which facilitates clear identification in service catalogs and when selecting a replacement based on the VIN. There are also interchangeable numbers available, which allow for verifying compatibility with various engine versions within the same platform. Thanks to this, a mechanic or technical advisor can quickly confirm the pump's compatibility with a specific vehicle configuration.

The product is marked in the warehouse system with an individual SKU identifier, which speeds up the order fulfillment process and minimizes the risk of errors when picking parts.

Condition, application, and benefits of installation

The water pump is offered as a used part, which provides an attractive cost-effective solution while maintaining the manufacturer's original specifications. This type of component is suitable both for standard replacement of a worn-out element and for post-accident repairs or engine overhauls, where maintaining the factory cooling system is crucial.

The main advantages of installation include:

• factory fitment to the mounts and engine accessories in the Mercedes Vito / Viano W639,
• maintaining proper coolant circulation throughout the entire system,
• reducing the risk of engine overheating during intensive use,
• favorable cost-to-quality ratio due to the use of an original, used part.

Service expansion and selection of related elements

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 pump drive components, check the available parts in the Mercedes Water pumps category.

During service work related to the cooling system and engine accessories, it is also worth paying attention to the correct selection of components relative to the fuel system. In this regard, the guide on diagnostics and selecting elements by VIN and OEM numbers will be helpful – you can find a detailed discussion in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Summary

Mercedes Vito Viano W639 Water Heater Valve Pump Motor is an original component from the Water pumps category, intended for professional cooling system maintenance in Mercedes vehicles. Thanks to its factory fitment, clear identification via catalog numbers, and the cost-effective form of a used part, it is a practical solution for workshops and users looking for a technically correct and economical way to restore the efficiency of the cooling system.