Water Pump A2742000900 For Mercedes W205 X253 W166

Automobile water pump is an important part of engine cooling system, and its main components include the following parts:

1. Water pump body: Water pump body is usually made of cast iron or aluminum alloy, including water pump shell, water pump impeller and bearing. The water pump body is responsible for pumping the coolant from the coolant tank and pumping it into the engine cooling system.

2. Bearing: The bearing of the water pump supports the rotation of the impeller of the water pump to ensure the normal operation of the water pump. Bearings are usually made of high-strength bearing steel or ceramic materials, which have good wear resistance and corrosion resistance.

3. Seals: There are several seals inside the water pump, such as shaft seals and O-rings, to prevent the coolant from leaking. The quality and sealing performance of seals directly affect the service life and working efficiency of water pumps.

4. Driving device: The water pump is usually driven by the belt or chain of the engine, and the impeller of the water pump is driven by the rotation of the engine to realize the circulation of the cooling liquid.

5. Drain hole: There is usually a drain hole on the water pump, which is used to drain the cooling liquid, which is convenient for replacing the cooling liquid or removing the air in the system.

6. Connectors: The water pump is connected with the engine cooling system through pipes to ensure the smooth flow of coolant.

To sum up, the composition of automobile water pump mainly includes water pump body, bearing, seal, driving device, drainage hole and connector. These components work together to ensure the normal operation of the engine cooling system and ensure the normal work and performance of the engine. Therefore, regular inspection and maintenance of various parts of the water pump is an important measure to ensure the normal operation of the automobile cooling system.