While vacuum pumps are essential to the workings of diesel and hybrid engines, they can also boost performance in petrol engines. Installing the right vacuum pump with a product from our range can significantly improve your cars response and efficiency. Vacuum pumps draw out the gas molecules from a sealed chamber to create a vacuum. The pressure of the vacuum is then used to power a wide variety of systems and devices depending on the make and model of your vehicle. In diesel and hybrid engines, the vacuum pump is solely responsible for supplying a vital vacuum to the brake servo a feature that isn't needed in petrol engines. Despite this, vacuum pumps are still useful in some petrol-powered vehicles as they increase hydraulic support for the brakes. They can also be used to power the motors that control the air flow in car ventilation systems, the throttle driver in cruise control systems and even the central locking system. Whether responsible for your brakes or your security, a reliable vacuum pump is essential and should be immediately replaced if malfunctioning.