Mercedes W176 W246 Auxiliary Coolant Water Pump A2048350364

Mercedes W176 W246 Auxiliary Coolant Water Pump is an original component from the Water pumps group, designed for use in Mercedes W176 and W246 series vehicles. Thanks to its factory design, it ensures proper coolant circulation in the system, stabilizing the engine's operating temperature and supporting its durability. This is a solution for users looking for a proven, technically matched water pump instead of universal replacements.

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 compatibility for Mercedes W176 / W246

The presented pump has been designed with the cooling system architecture of the Mercedes A-Class (W176) and B-Class (W246) models in mind. This means compatibility with factory engine equipment, correct positioning of the ports, and appropriate fluid flow characteristics. Using an original water pump reduces the risk of assembly issues, leaks, or improper operation of the thermostat and radiator.

Technical and functional characteristics

The water pump is responsible for the forced circulation of coolant between the engine block, cylinder head, heater, and radiator. A properly selected impeller and housing ensure stable flow across the entire RPM range, which translates into maintaining the optimal operating temperature of the power unit. The OEM design is engineered for:

• appropriate hydraulic efficiency under typical operating conditions,
• compatibility with the factory drive (belt, pulley, tensioner),
• maintaining cooling system tightness under variable thermal loads.

As a result, the water pump operates predictably, which is essential both in daily city driving and on longer highway trips.

Condition, origin, and benefits of using a used part

The offered pump belongs to the group of used parts, which allows for reducing repair costs while maintaining the manufacturer's original specifications. For many Mercedes W176 and W246 users, this is a reasonable compromise between price and quality, especially for cars used intensively or with higher mileage. Choosing an original, used water pump often means better fitment than in the case of cheap replacements with uncertain parameters.

Identification by numbers and assembly compatibility

The water pump has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection for a specific vehicle configuration. When matching, it is worth verifying compatibility by the Vehicle Identification Number (VIN) and comparing the component's design with the currently installed pump. This approach minimizes the risk of purchasing the wrong component and speeds up the service process.

Application in service and cooling system modernization

Replacing the water pump is recommended in case of noticeable coolant leaks, disturbing noises from the accessory drive area, or problems with maintaining the engine's operating temperature. Installing an original water pump in a Mercedes W176 or W246 allows for restoring the correct cooling system operating parameters and reducing the risk of engine overheating. This is particularly important in vehicles used in city traffic, where frequent engine warm-up and cool-down cycles place a heavy load on the entire system.

If you are planning a comprehensive repair or modernization of the engine area in your Mercedes and need other elements from the same group, such as auxiliary pumps, fluid circuit elements, or cooling support components, check the available parts in the Mercedes Water pumps category.

Technical support and knowledge about operating fluid systems

When selecting components such as pumps, injectors, or other supply and cooling subassemblies, it is worth using reliable sources of knowledge. Extended information on diagnostics, selection by OEM numbers, and operating principles can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", which organizes key issues related to the operation of systems based on fluid flow.

If your Mercedes belongs to model years that are increasingly referred to as youngtimers, and you want to consciously use the potential of used parts when refreshing your car, you will find practical tips in the guide "The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years", which describes modernization scenarios using original components from the secondary market.