Item Description: What is a fuel rail? The fuel rail is the long, round metal bar that runs along the top of the injectors and is held onto the manifold with a few bolts. The main function of the fuel rail consists in the optimal distribution of the fuel (gasoline, methane, etc.) to the injectors in the high or low pressure supply systems of endothermic engines Vehicle Fitment Ford Taurus 2001-2005 3.0L v-6 Ford Ranger 2001-2003 3.0L v-6 Mercury Sable 2001-2005 3.0L v-6 Mazda B3000 2001-2003 3.0L v-6 How to replace fule injectors in your car? .