K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16" (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.
4-1/2"Flg, 5-7/8"B, 4-1/2"T, 8-3/8"H
Environmentally Friendly: Washable/Reusable
It outflows any other filter on the market--up to 900 cfm--for power gains up to 15 HP
More Air Flow = Increased Horsepower
10 Year / Million Mile Limited Warranty
Works It's an air filter replacement, what more can I say? It took a while to install, I had to take a screwdriver to help fit the filter over the air box intake hole, but I think it is normal for a new part that has not been broken in yet....more info