Up for sale is a K&N drop in air filter that came out of my 93 4.0. the part number is 33-2024 and according to summit racing it fits these motors:
88-92 2.9 V6
89-94 2.3 I4
90-94 4.0 V6
91-94 3.0 V6
heres a link to the filter on summit's site K&N 33-2024 - K&N Washable Lifetime Performance Air Filters - Overview - SummitRacing.com
it is used but i just cleaned it but have not oiled it, i can oil it before shipment or send it un-oiled if need be. the box that i have it in isnt the origional box, that box is from my 05 F-150.
PM me or respond to this thread for interest or questions. I also have some stickers laying around i can throw in if anyone wants them. Im asking $30 shipped OBO