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

1991-1997 Ford F-250

1999-2003 Ford F-250 SuperDuty

1991-1997 Ford F-350

1999-2003 Ford F-350 SuperDuty

1999-2003 Ford F-450 SuperDuty

1999-2003 Ford F-550 SuperDuty

1984-1989 Ford E-250

1984-2003 Ford E-350, E-350 SuperDuty

2002-2003 Ford E-450 SuperDuty

2002-2003 E-550 SuperDuty

1997-1999 Ford Econoline SuperDuty

2000-2003 Ford Excursion

Genuine Ford Part Number: 1C3Z-6K649-BA