Universal Air Filter (5in Flange/6-1/2in Base/4-3/8in Top OD/8-3/4in Height) (KNNRU-3107HBK)Breathe easy and boost performance with the Universal Air Filter (5in Flange 6 1 2in Base 4 3 8in Top OD 8 3 4in Height) 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 Advanced synthetic filtration media for superior