Not sure which 1999 Subaru Impreza Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Went from a dirty paper filter to this and you can definitely feel a difference, especially when merging on the highway or passing (pedal to floor & car downshifts). Power is noticeable at the peak powerband of the vehicle (seems to want to open up more easily). It looks like Im going to get about 15-20 extra miles to a tank w/ this filter." —Keith H from Allenstown, NH bought a K&N Air Filters for a 1999 Subaru Impreza.