Universal Marine Round Tapered SS Flame Arrestor-3.75in Flg ID x 5.25in B OD x 3in T OD x 6in H (KNN59-2030)Breathe easy and boost performance with the Universal Marine Round Tapered SS Flame Arrestor 3. 75in Flg ID x 5. 25in B OD x 3in T OD x 6in H from K&N. This high flow replacement air filter is designed to increase horsepower and acceleration while providing outstanding filtration. Unlike disposable paper filters, K&N filters are washable and reusable so you buy once and never worry about replacements again. Features Multi layered oiled cotton gauze