The speakers in a 1998 Ford Taurus are 6X8, or 5X7. 6X8 and 5X7 would both mount in it, but the 6X8 are obviously bigger. Only bad thing is you won't be able to use any good looking speaker grilles because the metal covers in the back.
See "Related Questions" below for details on removing the door panel to get at the speakers
from80's to 98 its a 6x8 in front and back
The speakers i put in the dash of my 98 were 3.5 inch speakers!
My 98 ford Taurus jumps while idlingidling
all the door speakers are 6x8 on the 98 ford expedition.
How much of my car do i have to left to put 22'inch wheels on a 98 ford taurus?"
There are 4 6x8" speakers in the ford explorer sport == Answer ++ It depends on the year. My 98 has 4 4"x7"s.
According to the 1998 Ford Taurus Owner Guide : ( 16.0 U.S. gallons )
Following my information, front and rear speakers are the same. The size of the speakers are 6 x 8 (original mount). You can also use 5 x 7 speakers in second choice. They are very similar. For any other size, you have to custom the installation or use adapters.
According to the 1998 Ford Taurus Owner Guide : There was not a flex fuel version of the 3.0 liter " Vulcan " engine offered on the 1998 Ford Taurus
The 1998 Ford Taurus OBD 2 port is on lower edge of dash next to parking brake pedal
Whats the valve clerance on a 98 taurus?