K&N Round Tapered Universal Air Filter 3 inch Flange 6 inch Base 5 inch Top 6 inch HeightBrand K&N Engineering Part Number RF 1047 Category Air Filters Air Filters Universal Fit Condition Brand New Original Manufacturer Packaging The RF 1047 Universal Air Filter is constructed from an oiled cotton filter media. It comes with a K&N embossed carbon fiber top for strength and durability. The carbon fiber element adds to the light weight design and gives this filter a smooth glass like finish. The RP 1047 is a clamp on filter that has an