Mercedes W176 W246 Auxiliary Coolant Water Pump A2048350364

Mercedes W176 W246 Auxiliary Coolant Water Pump is an original cooling system component from the Water pumps group, designed for use in Mercedes vehicles. This used OEM pump ensures factory-standard fitment, correct coolant flow parameters, and stable operation with other engine components.

Specifications and technical data

• SKU: A2048350364
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2048350364
• Substitutable numbers: A2048350364, A 204 835 03 64, A2118350028, A 211 835 00 28, KD
• Category: Water Pumps

Purpose and function in the cooling system

The water pump in Mercedes W176 and W246 models is responsible for the forced circulation of coolant between the engine block, cylinder head, radiator, and heater core. A properly functioning component maintains a stable engine operating temperature, reduces the risk of overheating, and supports uniform heat dissipation under engine load.

The original pump from this series is designed for specific flow and pressure characteristics, ensuring that the cooling system maintains the efficiency intended by the manufacturer, while engine operation remains predictable and consistent under various operating conditions.

Advantages of using an original Mercedes pump

Using a factory component instead of a worn-out pump offers a number of technical benefits:

• secure fitment to the engine block and accessories, with no need for mounting modifications,
• preservation of factory impeller geometry and flow channels,
• compatibility with factory control systems and other cooling system components,
• reduced risk of leaks resulting from imprecise fitment.

As a result, replacing it with an original Mercedes water pump allows you to restore proper coolant circulation and maintain stable engine operating conditions without interfering with the vehicle's design.

Product characteristics and condition

The offered pump comes from a dismantled Mercedes vehicle and is classified as a used OEM part. This type of component is particularly attractive to users who expect factory fitment and predictable system operation while wanting to reduce costs compared to purchasing a new part.

The presence of the OEM part number and interchangeable numbers in the specification facilitates precise verification of compatibility with a specific engine version and vehicle model year. Before purchasing, it is recommended to compare the markings with service documentation or the existing pump to confirm full installation compatibility.

Selection by OEM number and technical support

For components such as a water pump, it is crucial to match them by OEM number and reference numbers, as even minor design differences can affect mounting, drive type, or coolant channel routing. If in doubt, it is worth using diagnostics or consulting a mechanic who will verify the part's compatibility with the specific engine.

Additional information on selecting components by factory numbers, diagnostics, and engine power supply component regeneration can be found in the article: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which discusses a practical approach to identifying parts by VIN and OEM numbers.

Why choose a used OEM part

For many users, a reasonable compromise between cost and quality is a used original part. It retains factory specifications while allowing for cost savings compared to a new element. Differences in fitment and durability compared to cheaper replacements are particularly significant in critical systems, such as engine cooling.

If you want to better understand when choosing a used OEM element is more beneficial than installing a replacement, check out the guide: 5 reasons why a used OEM part is a better choice than a replacement. You will find specific examples and criteria there that will make your purchasing decision easier.

Expanding the cooling system in a Mercedes

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 auxiliary pumps, coolant circuit elements, or cooling support components, check out the available parts in the Mercedes water pumps category.