The part is: Number 1 Air Cleaner Hose; 17881-42030, Toyota price of apprx $94, toyotapart.com price is apprx $56.
The only thing you need from the stock intake is the MAF sensor... as long as thats on there your car will run, I recently put aftermarket intake on which just consisted of aluminum piping from throttlebody to MAF sensor then onto filter.. And it ran me apprx $75 cause I bought a kit for lazy people, can probably make it cheaper
