Fuel surge tank compatible with popular 39mm diameter EFI fuel pumps with inline inlet/outlets. Integrated adjustable EFI fuel pressure regulator. Can hold up to three pumps. Fuel pumps sold separately and must be installed by the end user. Approximately 2 liter fluid capacity. Adapter fittings included for 10AN outlet, 8AN return, 8AN connections to fuel tank. Other adapter fittings can be used for different hose sizes (sold separately). Compatible with E85 and other fuels.