According to the 2003 Ford Explorer Sport Trac Owner Guide :
( # 9007 bulb is used in the headlights )
( 16.8 gallons ) in the 2003 Ford Explorer Sport
A 2003 Ford Explorer Sport ( the two door version of the Ford Explorer ) has shock absorbers front and rear
horn not working on 2003 ford explorer sport trac, just a clicking sound
Sport has better horsepower intern making it faster and easier to handle
The fuel tank size for the 2003 Ford Explorer Sport is ( 16.8 gallons / 63.6 liters ) according to the owners manual
According to the 2003 Ford Explorer Sport Owner Guide : ( 16.8 US. gallons ) is the tank capacity
According to the owner's manual - headlight bulb # 9007
location of alternator
replacing 2003 fore explorer sport front wheel bearings
The fuse for your 2002 Ford Explorer Sport is similar to that of the 2001 Ford Explorer Sport.
I was looking at the 2003 Ford Explorer Sport Trac Owner Guide and it does not show an air filter for the cabin / passenger compartment , so I would say ( No )
You can get a free 2003 Ford Explorer Sport Trac wiring diagram online at the Modified Life website. You can also find this diagram in the Ford owner's manual online at Ford.com.