I have a 2003 Toyota 4Runner SR5 and it's recommended that I change the cabin filter every 15,000 miles or once a year. The dealership charges close to sixty bucks for this little bugger, so I decided to see about doing it myself and found theFRAM CF9846A Fresh Breeze Cabin Air Filteron Amazon. By doing a search on how to install it (video available on YouTube doing search 'Changing cabin auto filter, Toyotal 4Runner 2003') and buying this product from Amazon, I saved money and I believe I purchased a superior product to the stock filter.It is a bit of a bear to get the glove box back into place - at least for me, but generally speaking the replacement of this filter can be done in 15 minutes in most instances.  The tough part for me seems to be reseating the glove box so that it has smooth operation.  The directions in the air filter box are inadequate and the step-by-step ones on YouTube were a God send! Three basic steps to get to the filter: unscrewing screw on right side, unhooking arm and removing the glove box by pinching the sides to expose the filter behind the glove box.  Changing out the filter is simple and you want to have the flattest part of the filter down in the air filter rack when you slide it into position. Reversing the order of things is how you finish up.  I'm not a mechanic, but I am a girl who likes to save money, which is what I do when I change this filter myself.As for the 'fresh scent', I don't notice it too much, but I see that as a perk because when it's time to change the filter I really get some funky scents - especially in the summer with the AC going.  On this particular 4Runner, I sometimes get a sulfur smell in the cabin (a problem with this model year I'm told...) when I stomp on the accelerator, but this filter makes that much less noticeable.Overall, I'm pleased with this purchase and will by more of them in the future.  Local oil change places charge more than forty for the filter alone.  This is a great price, fairly easy to install and it works.