They make one for that model/year, as I understand it is smaller in diameter than the current one, seems like 5 1/8" vs 5 1/2" or something like that. Here is their web site-Jim,
You said 2009 S model, so I am assuming that it wont work for my 2009 50"? I am going away from my pre filter on the top of my snorkel and want to change the stock filter to something else and run an outerwears on it...