I need to replace mines and would like to know where everyone gets theres from? Can I get it at the dealer or is it too expensive? How much do they usually run for?

And should you replace both filters at the same time? My car is roughly at 18k now...

 

go oem on the cabin. they are had for under 30$ and install is cake.
as for enine air filter, just throw a k&n drop in filter in your stock asirbox. ebay BIN- under 50$

 

Riverside Infiniti on ebay, you can find the in-cabin air filters and their equivalents for 15 bucks and up. http://stores.ebay.com/Riverside-INF...QQftidZ2QQtZkm

 

Where is the cabin filter located on the coupes?

 

under the glove box, bythebay has a good tutorial on youtube.

 

rockauto.com they're like 7 bucks plus shipping.

 

walmart has some now.

 

autozone. or napa.