The original equipment vacuum pump on certain Ford Econoline vans and Super Duty trucks tends to fail when the pump shaft unthreads, loosens and separates from the pulley. Replacing a pump with another failure-prone factory unit can also be a hassle because the dealer only sells the pump and pulley as two separate components that require special tools to assemble and install. This Dorman OE FIX vacuum pump is pre-assembled, reducing labor time and eliminating the need for repair-specific tools for a complete and professional installation. And, to prevent the pulley from separating from the pump, this all-in-one vacuum pump features a welded-on pump shaft end, an important upgrade engineered to help ensure a more reliable and longer-lasting repair. 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: 1996, 1997, 1998, 1999, 2000, 2001, 2002] - [Ford E-350 Econoline: 1996, 1997, 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: 1999, 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: 1996, 1997, 1998, 1999] - [Ford F-250 HD: 1997] - [Ford F-250 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-250: 1996] - [Ford F-350 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-350: 1996, 1997] - [Ford F-450 Super Duty: 1999, 2000, 2001, 2002, 2003, 2004] - [Ford F-550 Super Duty: 1999, 2000, 2001, 2002, 2003] - [Ford F-Super Duty: 1996, 1997]