Hi guys,i went to a local parts shop to get all thats needed to service my 2002 tj magna 3.5 v6. There is a filter for the auto trans but i cant seem to locate it. Btw,do i need to flush the auto trans before fillin up new fluid? Help me guys,thanks a million.

There isn't a serviceable one for the TJ, it has an internal filter. Earlier models had a screw-on type filter on top of the transmission case

If you're planning on replacing the fluid, then flushing out the old stuff would be recommended. There's heaps of threads regarding method.