Upgrade your fuel system with this Cummins factory fuel bowl delete block. Ideal for Air Dog, FASS, or other aftermarket fuel filtration systems. This fuel filter delete will remove your factory fuel filter giving you a clean engine bay! It mounts perfectly to allow the factory fuel return lines to be used without any relocating or bending. It features 2 ports on the back side, 1/8 NPT ports for a dual CP3 return line.