1999-2003 Ford F450 Super Duty. 1999-2003 Ford F550 Super Duty 7.3L. 1999-2003 Ford F350 Super Duty. 1999-2003 Ford F250 Super Duty. FD-4596 7.3L diesel engine fuel filters are up to 98% efficient at ten microns or larger, it can help block impurities and contaminants in your fuel or gas tank before they can enter your engine or clog your injectors, improve vehicle performance by ensuring a uniform fuel flow and prevent stalling, poor starting and potential engine failure.
