BMW N55 Water Pump

There are some car parts that do not need to be replaced immediately in case of failure, such as the car’s wiper motor, which cannot cause problems for the engine system if it breaks down, but the water pump is not one of those parts.

Considering the critical role of the pump in engine cooling, if it fails, it will have quick consequences, including complete engine failure. Replacing a broken water pump is not a quick job, but it saves you from worse consequences such as engine replacement. So, you should be alert and pay attention to the signs that show that the water pump is faulty.

What is the Function of N55 Water Pump?

The function of the water pump is clear from its name, the pump that is responsible for making the water flow.
The circulation of water causes the water to flow cool water into the engine (cylinder blocks) as soon as the thermostat commands, to absorb the resulting heat and return it to the radiator.
Then the cooling fans in front of the car are responsible for cooling this heated water flow to a sufficient extent. The failure of the car’s water pump causes the car to not be able to return to the proper temperature.

BMW N55 Water Pump Location

Fortunately, the water pump installation location in BMW cars is easily accessible from under the car.
Water pumps are usually placed in the car in two ways. In the first case, the motor part of the water pump is placed in the motor part on the engine. In this case, it can be accessed through the hood on the right side.

But in a BMW car, access to the water pump is in front of the engine, in this case, to open it, the car must be in a higher position than you. Then you can easily find it from under the car on the right side (from the driver’s view) next to the engine.

N55 Water Pump Replacement

The steps of N55 Water Pump Replacement are not difficult and complicated despite the heavy fear that exists in our imagination at the beginning. As with all replacement parts, you must first find it, which was explained in the previous step. Then remove the defective part and put the new part in the same place as before and That’s the Finish !

1. In the first step, you should release all the connections and pipes that exist in the way of replacing and removing the old water pump as much as possible so that you have more work space. Open the screws holding the pipes under the car and lower the pipes as much as possible.

2. In the next step, go to the water pump connection bolts. In normal water pumps, there are two connection bolts and in electric water pumps, there are four connection bolts that must be completely opened.
   You can use old bolts, but in newly purchased water pumps, there are usually connecting bolts, which are better to use and replace the bolts.

3. After opening the bolts, make sure that the water pump comes out without problems or breakage. First, remove the electrical connector and then open the clamp and connect the pipes.

4. The inlet and outlet pipes of the water pump are completely different in terms of size. You can easily find the correct position of the water pump from the size of the water pump outlets .

5. Before connecting any pipes to the new water pump, tighten all the water pump bolts in place with a special wrench.

6. After making sure that the water pump is in the correct position, close the connected pipes and make sure to secure them with a clamp so that there is no water leakage.

7. After filling the radiators, make sure that you use antifreeze for the N55 engine to avoid any problems in the cold season. After that, turn on the car and make sure there are no possible leaks.

N55 Water Pump Failure Symptoms

Since it was said that the breakdown and defective water pump (which can be the reason for the breakage of the vanes inside the water pump) is one of the problems that can have serious consequences for the car engine, your car should be well before reaching this stage. It gives you warnings that you can easily understand that there is a problem in a part of the water pump.

1. The first issue that can be an important warning for the failure or breakage of a part of the water pump is the observation of water drops under the car or any leakage. Therefore, if you take your car out of the parking lot in the morning and you see signs such as water or orange or blue spots (due to antifreeze) under it, the first thing you should suspect is the failure of the water pump.
2. Hearing strange sounds from the side of the car engine, which are like a moaning sound, and are heard especially when the car is accelerating, indicates a problem in the car belt due to its tearing or looseness. These noises should be examined by a mechanic quickly.
3. Any overheating of the car engine is one of the signs that the flow of water to blood cannot heat the engine. Whenever you encounter the temperature warning light while driving, you should immediately stop at the nearest safe place. High engine heat can quickly damage the engine.
4. Seeing any steam is one of the other signs of water pump failure. While driving or while stopping the car, if you see suspicious smoke coming from under the hood, it is probably a sign of high engine heat that has put something under pressure.
5. Observing sediments caused by liquids left on car parts is one of the main reasons indicating the existence of problems in water-related parts. Hot water evaporates before exiting the broken seams and leaves deposits behind. Always be suspicious of such deposits.

N55 Water Pump Replacement Cost

If the mentioned steps are not very convenient for you or you do not have the right tools (which do not require special tools for this job), you should entrust this work to a mechanic.
For this purpose, in addition to paying the cost of buying a new water pump, the amount of which varies from 200 to 500 dollars (depending on the material used in the production of the water pump – plastic or all metal and the quality of production) , You should consider 200 to 300 dollars replacement cost for it.

BMW N55 Water Pump and Thermostat

BMW N55 Water Pump, as its name suggests, is for engines designed as BMW N55, which were used in BMW cars and models produced between 2012-2019, such as BMW Series 3 , 335i, M235i. and X6 and X5

This engine was a forward-looking innovation by BMW, which at the time provided extra power for six-cylinder in-line engines of this series due to the use of turbocharging.
To produce this series of engines, BMW designed the cylinders sequentially as always, but by using Valvetronic technology, it was able to create a good balance between power and consumption while increasing the output and engine power.

Conclusion

The BMW N55 water pump is one of the parts related to the engine, which is responsible for cooling the car engine so that its performance does not suffer.
Car engine heating is a big problem for the car.
Heat disrupts the performance of the engine, and more dangerously, it causes damage to the main part of the engine, which can cost you up to several thousand dollars. Regardless of the fact that you have to wait for a long time to drive your car again!