A fuel pump transfers fuel throughout your system to the necessary components so your 2009 Lexus GS450h can run. Your pump draws fuel out of the tank through a pipe to the carburetor, & this is done with a vacuum suction. From there it sends the fuel to the fuel line and into the fuel rail where it can be injected into the cylinder. A fuel pump also has other components such as a filter, and a float. A float helps read what level your fuel is at. Upgrade to a performance fuel pump today and ensure your vehicle is getting the fuel it needs to properly run. Sport Compact Warehouse is your premier source for performance fuel pumps. If you have any questions regarding fuel pumps reach out to one of our experienced representatives and we will help you make a more informative decision.