Oil Cooler O-Ring Seal is a direct fit for the following:

2000-2003 Ford Excursion
1994-1997, 1983-1990 Ford F Super Duty
1991-1997, 1983-1989 Ford F-250
1999-2003 Ford F-250 Super Duty
1991-1997, 1983-1989 Ford F-350
1999-2003 Ford F-350 Super Duty
1999-2003 Ford F-450 Super Duty
1999-2003 Ford F-550 Super Duty