Fuel filter location 2002 toyota 4-runner

Look along the inside middle of the left frame rail.

I will try that...

The reason why I was asking, cause all of the skid plates..

I didn't want to start pulling them all off.

I think it's a real good idea to periodically remove the skid plates (and other bolted things underneath) and give 'em a little wire-brushing, then put 'em back with some anti-seize on the threads. Actually, I replaced the bolts with 316 stainless bolts besides the anti-sieze compound on the threads. It would be good to have a look at the underside of the engine with the skid-plates removed just to see if there's anything that needs attention. Just a suggestion based on trying to deal with frozen bolts in the past. Mind if I ask why are you dealing with the fuel filter? The reason I ask is that I have yet to replace the truck's fuel filter. This was based on a time I replaced a fuel filter on the GTS years ago and curious, put the old filter in the sun here in So Cal one summer. A week later of heat on it I carefully sawed it open to inspect the filter element and observed that it was clean. Of course I'm not suggesting anything but what I discovered and since then wondered about when and if fuel filters do get clogged, and by what. I know that there's a filter system in the take up line at gas stations. There's a filter in some gas tanks, so what would get into the fuel filter? Logically the answer would be rust and scale, with dirt further down the list, but in reality, is this true? Any info would be greatly appreciated from any and all. Always trying to learn something new.