There are many different parts in your Mercedes-Benz designed to help support the internal combustion engine. There is a lot of pressure that builds up inside your vehicle, which is used to power things like belts and pulleys. This pressure, however, has to go somewhere, and it is released with the use of the vacuum pump in your vehicle. The vacuum pump runs at the same time that your cylinders on your engine fire. The vacuum pump is something that needs to be kept in good condition, because it plays such a big role when it comes to the performance and operation of your car. A vacuum leak can occur due to different hoses breaking or faulty connections in the system. You could lose fuel efficiency because of this. Another thing that can happen is oil leakage from under the side of your engine. If you need a new vacuum pump, be sure to get an OEM one for your Mercedes-Benz. Shop our site today for one!