I learned on here that for some reason the PureOne PL14459 meets the 99.9% efficient rating and the PL14610 doesn't. Frankly, I doubt it matters much, but I decided to try the PL14459 which is fatter (3.15"), shorter (2.95"), but with the same gasket diameter. The 14459 fits really nicely on my Kawasaki Ninja 500, and I like the way it doesn't protrude as far and looks to be better protected in there (though I have never busted an oil filter!). In any case, I just thought that others might want to know there is another option to the frequently used NAPA 1355, the SuperTech ST7317, the PureOne 14610, or the Wix 51356 size. Just be sure to check that you can handle the fatter diameter.