The cabin air filter for your Honda Civic is the same as the one for my Acura EL. I have been unable to find a good aftermarket one that's as good as the OEM filter(I have allergies). I just get them from the local Honda dealership. Replacement takes all of 5-10 minutes. It;s really simple. All you do is drop the glove box and slide the old filters out and put the new ones in.