According to the 2004 Ford Explorer Sport Trac Owner Guide :
The 4.0 liter SOHC engine uses :
Engine oil filter ( Motorcraft FL-820-S )
Engine air filter ( Motorcraft FA-1744 )
Engine fuel filter ( Motorcraft FG-1036 )
need to find the fuel filter on 2004 explorer
Ford Explorer 2004 does not have Cabin Air Filter or A/C filter.
5 U.S. quarts ( 4.7 liters ) with engine oil filter change
Where is the air cabin filter
its located in your MAF on the air intake ========================================================== The Mass Air Flow sensor is located between the engine air filter housing and the engine air intake tube on your 2004 Ford Explorer Sport Trac
On 2004 ford exp sport trac is 99mph
one in the gas tank, and one under the driver (left) side of the chasis, closer to the rear pasenger door.
backseat removal
The only factory engine in a 2004 Ford Explorer Sport Trac is the 4.0 liter Single Over Head Cam , V6 engine which has ( 6 engine cylinders )
yes
There is no owners manual shown for a 2004 Ford Explorer Sport on Fords website The 2004 Ford Explorer owners manual shows ( fuse # 24 - 15 amp - cigar lighter , OBD II , neutral tow ) The 2004 Ford Explorer Sport Trac which has the fuse panel on the drivers end of the dash where the fuse panel cover is visible with the drivers door open shows ( fuse # 17 - 20 amp - cigar lighter , OBD II )
Absolutely , the engine in a 2004 Ford Explorer needs an engine oil filter ( or your engine will only last a few seconds while the oil pumps out on to the ground )