Here is a list of filters. I use the PL14612 filter. The WalMart filter is used by a few people and I have seen reviews on the internet (take that for what it is) that it is a quality filter. I bought one, but since it is a longer filter, when you close up the fairing it touches. I was afraid that it may vibrate against the fairing so I use the shorter filter. The shorter one is the same size as OEM.
(from another thread.. info from Raven)
Here's a list of possible filters:
About 2.5 inches long
? Purolator Pure One PL14612, about $6.
? Mobil M1-108 - about $12. Made by Champion.
? Bosch 3300 - about $6. Made by Champion.
About 3.25 inches long:
? Purolator Pure One PL14610 - about $6.
? Mobil 1 M1-110 - about $10. Made by Champion.
? Bosch 3323 - about $6. Made By Champion.
? WalMart SuperTech ST7317 - about $2. Made by Champion.