This Motorcraft Brake Light Switch fits your 2003 Ford E-550 Super Duty 6.8L 7.3L V10 V8 and is perfect for a tune up or performance upgrade. .
Motorcraft Brake Light Switch for 2007-2008 Ford Escape 2.3L 3.0L L4 V6 - ij
Motorcraft Brake Light Switch for 2007-2008 Mercury Mariner 2.3L 3.0L L4 V6 dx
Motorcraft Brake Light Switch for 2003-2005 Ford E-150 Club Wagon 4.2L 4.6L gx
Motorcraft Brake Light Switch for 1995-1998 Ford Windstar 3.0L 3.8L V6 - fw
Motorcraft Brake Light Switch for 1997-2002 Ford E-350 Econoline Club Wagon jv
Motorcraft Brake Light Switch for 2002 Ford E-550 Econoline Super Duty 6.8L qk