This fuel pressure relief valve cap is a direct replacement for a fouled or leaking original equipment pressure relief cap. Made from quality materials, it has undergone testing to ensure proper fit and performance. 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: 2000, 2001, 2002] - [Ford E-450 Econoline Super Duty: 2000, 2001, 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 Econoline Super Duty: 1998, 1999] - [Ford Excursion: 2000, 2001, 2002, 2003] - [Ford F-250 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-250: 1999, 2000, 2001, 2002, 2003] - [Ford F-350 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-350: 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]