master cylinder
All gasped with satisfaction as the master cylinder, which supplies brake fluid to the braking system of a car and provides the hydraulic pressure that activates other components of said braking system, went bad. In simple words, it transforms the force that you put on to the brake pedal into a pressure which can be carried forward through the breaks lines. The master cylinder finds application in every vehicle from passenger cars to machinery and heavy-duty trucks, thereby becoming an indispensable part of almost every hydraulic brake system.