a 2000 f-150 4.6 5-speed 4x4 with 3 rads???? ok one is for a/c one for cooling the engine but the i one more that is 8 in by 4in or so what is this for?????? o ya the 2000 4.6 ford f-150 had 231hp well that is what my book says and my truck is a w code built in canada

 

HI!... That would be your power steering cooler. It's on the driver's side below the condensor bolted to the lower rad cradle, right?

 

thanks i didn't get a chance to look under to see where it went.
so in 2000 a w codeengine has more hp than a 6 code engine?????????? my 2000 is a lot diffent under the hood than my dads 98 and there both 4.6 but he is an auto and mine is a stick

 

If I'm not mistaken, your engine has "coil on plugs" while your dad's has ignitions wires between the plugs and coil packs.