Mercedes-Benz W202 A208 C208 W208 W210 Water Heater Auxiliary Pump A0018353564

Mercedes-Benz W202 A208 C208 W208 W210 Water Heater Auxiliary Pump is a specialized cooling system component designed for installation in the rear part of the vehicle. Thanks to its factory design tailored to Mercedes C and CLK series W202, C208, and W208 models, it ensures stable coolant circulation and supports the proper operation of the entire system. This is a practical solution for users looking for a proven, original water heater auxiliary pump for their Mercedes.

Specifications and technical data

• SKU: A0018353564
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0018353564
• Substitutable numbers: A0018353564, A 001 835 35 64, KZ
• Location on the vehicle: Rear
• Category: Water Pumps

Purpose and function of the water heater auxiliary pump

The water heater auxiliary pump from the Water Pumps category is responsible for the forced flow of coolant in the rear part of the vehicle's cooling system. In Mercedes C and CLK models, its proper operation contributes to:

• maintaining a stable operating temperature of the engine unit,
• proper cooling of components located in the rear zone of the vehicle,
• increasing the durability of components exposed to elevated temperatures.

Its placement in the rear part of the vehicle allows for effective support of the main cooling system and reduces local overheating.

Compatibility with Mercedes C and CLK models

The presented pump has been designed with the cooling system architecture of the Mercedes C-Class W202 and CLK C208/W208 in mind. This means it is matched in terms of:

• geometry of the ports and connections with cooling hoses,
• mountings in the rear part of the body,
• operating parameters consistent with the manufacturer's factory specifications.

As a result, the installation process is similar to replacing a factory component, without the need for system modifications or the use of additional adapters.

Performance characteristics and application benefits

Using a dedicated water heater auxiliary pump in a Mercedes C or CLK brings measurable operational benefits. The most important include:

• temperature stabilization throughout the cooling circuit, including the rear part of the system,
• more uniform heat distribution, which promotes component durability,
• maintaining operating parameters consistent with the vehicle manufacturer's specifications.

This solution is particularly important in cars used in urban conditions, with frequent heating and cooling cycles, where an additional water heater auxiliary pump helps to limit temperature spikes.

Component condition and installation aspects

The water heater auxiliary pump is offered as a used original component, which allows for maintaining the factory operating characteristics of the cooling system. Before installation, it is recommended to perform a standard verification of the cooling system – checking hose tightness, coolant quality, and proper system bleeding after replacement.

The location in the rear part of the vehicle requires access to the appropriate body area, however, thanks to the factory mounting points, the installation process is predictable and can be carried out in a typical workshop specializing in Mercedes vehicles.

Expanding the Mercedes cooling system

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

To better understand the relationship between the cooling system and engine power, it is worth reading the guide on diagnostics and selection of fuel supply components – you will find practical tips in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", which helps to look at engine operation in a holistic way, taking thermal load into account.