Fuel separator leaking? It could be as simple as worn or cracked O-ring seals. Don't replace the whole fuel separator, just reseal it with this O-ring kit. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford E-350 Club Wagon: 2003] - [Ford E-350 Econoline Club Wagon: 1998, 1999, 2000, 2001, 2002] - [Ford E-350 Econoline: 1998] - [Ford E-350 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford E-450 Econoline Super Duty Stripped: 2002] - [Ford E-450 Econoline Super Duty: 2002] - [Ford E-450 Super Duty Stripped Chassis: 2003] - [Ford E-450 Super Duty: 2003] - [Ford E-550 Econoline Super Duty: 2002] - [Ford E-550 Super Duty: 2003] - [Ford Excursion: 2000, 2001, 2002, 2003] - [Ford F-250 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-350 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-450 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-550 Super Duty: 1999, 2000, 2001, 2002, 2003]