Is it a flat or conical style filter? Check out AFe's offerings for filters as well. They offer a large variety and also offer dry filters that you simply wash out with warm water and dry. Most if not all have a lifetime warranty too. I'm in no way associated with them but have had their filters and intakes on all my cars and have never been let down.i just recharged my trd cai filter today. it was a pain waiting for it to dry. it would've been nice to have a spare. but every 50,000 miles. wonder what it would cost to have this serviced at the dealership. would they wait 6-8 hrs to do it right? i measured my filter while i had it out and it's 7 1/4 x 12 1/4 outer dim. & 6 5/8 x 11 5/8 inner dim; FYI. i will look for a K&N as a spare.