Rein OE Quality GDI Fuel Feed Pipe is designed to be a direct replacement of the OE high pressure fuel feed lines used in today's GDI systems. These lines reside between the high pressure fuel pump and the fuel rail and are constantly exposed to a very harsh, high pressure environment; hence, the manufacturer requires replacement of the fuel feed pipes each time the high pressure side of the system is opened. Rein's OE quality GDI fuel feed pipes ensure that the system is properly sealed and function as per the manufacturers specifications and design.