Brand New Mechanical Vacuum Pump Front Engine Mounted (Mechanically Driven) This Vacuum Pump Matches The Fit and Function Of The Original Equipment Pump To Restore Operation Of Vacuum-Operated Functions Compatible With 1996-1999 Ford Econline Super Duty (V8 445 7.3L; DIESEL) Compatible With 1996-2003 Ford E-350 (Club Wagon, Super Duty, V8 445 7.3L; DIESEL) Compatible With 1999-2003 Ford E-450 (Super Duty, Super Duty Stripped, V8 445 7.3L; DIESEL) Compatible With 2002-2003 Ford E-550 (Super Duty, V10 415 6.8L, V8 445 7.3L; DIESEL) Compatible With 1996-1997 Ford F-Super Duty (V8 445 7.3L; DIESEL) Compatible With 1996-2003 Ford F-250 (V8 445 7.3L; DIESEL) Compatible With 1996-2003 Ford F-350 (V8 445 7.3L; DIESEL) Compatible With 1999-2002 Ford F-450 (V10 415 6.8L, V8 445 7.3L; DIESEL) Compatible With 2003-2004 Ford F-450 (V8 363 6.0L, V10 415 6.8L, V8 445 7.3L; DIESEL) Compatible With 1999-2003 Ford F-550 (V8 445 7.3L; DIESEL) See Compatibility Chart To Verify Your Specific Vehicle Year, Make, & Model Replaces F6TZ-2A451-AA