Re: Best filter for stock box?
ok even though you specifically said stock box I will throw in 2 bits.
the stock airbox is the whole problem ..crappy tabs that break off restrictions lids that bow and let in debris, etc..if you want to stay "stock" go with the ford ais filtersystem. yes it is about 200$ from powerstroke shop .com but a dusted engine is way way more.
for 40$ you should be able to build a tymar filter system .
otherwise go witgh the motorcraft filter keep it changed anf keep any eye on the insides for signs of dust
Early 99 f350 4x4 crew cab, auto. pmt2 pcm
2001 cup holder ,T500, MAX AC ASSIST AC mod, Diy Twin tymar, TS chip, Powerslots & Hawk pads, ford AIC, ..... with big fat want to list.