Also, get ready for to be a different size than the original. A few months back mine had a leak and while trying to find one just like my original one, i found that they are hard to come by. I asked the same question you did and everyone told me that even though the new one was not exactly like the old one, it would still work. Not that I didn't believe them, I had my original one repaired and re-installed it. At no cost for the fixed core. Next time i'll use the aftermarket one just because of the down time involved. Also, make sure you seal real well around the air box.